Glossary in M (Celtic)

Here is a glossary of mythology Celtic : Mabinogion (The four branches of the Mabinogi), Macha, Mac Cecht, Mac Cuill, Mac Greine, Mac Oc, Manannan Mac Lir, Manawyddan Fab Llyr, Maponos, Marc'h, Math, Matholwch, Medb, Medyr (Mider), Menw, Merlin (Marzin, Myrdhin), Miach, Midir, Mile (Milesians), Mog Ruith, Momoros, Morfessa (and the Stone of Fal), Morrigane Morrigan, Macha, Moytura, Muirne, Mullo

Celtic Glossary

Celtic Glossary

Emain Macha, in Irish Celtic mythology, is the name of the residence of the King of Ulster Conchobar Mac Nessa. It was given to him by the goddess Macha (plain) of the Tuatha Dé Danann, who is an avatar of Morrigan.

While she was pregnant with her husband Crunmiac, her delivery is scheduled for the day of the assembly of Ulates (inhabitants of Ulster). Recklessly, the husband brags, and claims that his wife can run faster than the best horses in the king's stable. Masha, summoned to prove this assertion, asks for a delay, given her condition. It is denied him. Obliged to run, she runs faster than the horses, and once there, following the effort, she immediately gives birth to twins. Emain Macha means: the "Twins of Macha". To avenge herself for this obligation, she lets out an evil howl that bewitches all the men of the province. They suffer the pains of childbirth, for four days and five nights, as soon as the kingdom is in danger.

The only one who escapes the curse is Cúchulainn, the hero who must defend the kingdom alone. This is the subject of the story Táin Bó Cúailnge (Razzia of the cows of Cooley), in which we see him defending the border, facing alone the united army of the kingdoms of Ireland.


Mac Cecht, in Irish Celtic mythology, is part of the Tuatha Dé Danann, he is one of the sons of Cermait, himself the son of Dagda.

With his brothers Mac Cuill and Mac Greine, he kills Lug to avenge the assassination of their father who had had an affair with the wife of the great god. The three brothers then become Ard ri Érenn (Supreme Kings of Ireland), in turn, endorsing sovereignty for a year. This three-headed reign lasts for three decades. They are the last kings of the Tuatha Dé Danann before the arrival of the Milesians on the island. He is nicknamed "Son of the Plow". His wife is Fódla, a personification of Ireland.


Oengus (or Aengus, or Mac Oc) is the natural son of Dagda and Boand (name of the River Boyne), he was procreated and he was born on the same day. The Dagda had tricked Boann's husband into kidnapping him. Oengus means "unique choice" and Mac Oc "young son". According to the custom of forestry, he was brought up by Midir, a brother of his father. He has a daughter named Curcog. In the organization of the Tuatha Dé Danann, it is a god who participates in the three functions (priestly, warrior and artisan - see Indo-European tripartite functions).

It is described as very beautiful, always accompanied by four birds. In his sleep, he falls in love with Caer Ibormaith, whose father, Ethal, refuses to give him a hand. Oengus forces him to tell him where she is hiding, he discovers her swimming on a lake, under the aspect of a swan in the middle of one hundred and fifty birds. On Samain's day, he also transforms and goes to look for the young girl. He is the adoptive father of Diarmuid Ua Duibhne. He is comparable to Apollo from Greek mythology.

He seizes by trickery the home of his father, the Brug na Boinne: he asks for the symbolic property for a day and a night. But in the Celtic realm, a day and a night represent eternity, so he becomes its official owner. Time and eternity are under his responsibility.


Manannan Mac Lir, literally "the Mannois son of Lir" (Lir being the Ocean), its equivalent Welsh is Manawyddan Fab Llyr. He belongs to the Tuatha Dé Danann (People of the Goddess Dana), he is the sovereign god-warrior of the Celtic Otherworld, the (Sidh). He is its steward and master, and as such, he provides the other gods with the fabulous pigs served at the Feast of Immortality.

If the Sidh is located underground, it is accessed across the waters (seas, lakes, rivers); Manannan drives his chariot over the waves and across the plains, and his boat maneuvers alone. This is the reason why he is sometimes made a marine god protector of navigators or, on the contrary, wrecker of ships, but his power places him among his brothers: the Dagda and Ogme. He is the husband of Fand who will have an amorous affair with the hero Cúchulainn.

Among his powers, we must emphasize the gifts of metamorphosis and ubiquity as well as his role as a psychopomp; he uses his cloak of invisibility, in particular to prevent Cúchulainn from seeing Fand. He is the father of many divine or human children.

He would have given his name to the Isle of Man.


The Mane (or Maine), in Irish Celtic mythology, are warriors, sons of the rulers of Connaught, Queen Medb and King Ailill. They appear in particular in The Men of Medb, or The Battle of the Boyne) and in the story of the Raid of the cows of Cooley (Táin Bó Cúailnge).

Mane is not the name given to them at birth, but war names to fulfill a druidic prophecy:

* Feidlimid, becomes Mane Aitheamail,
* Cairpri, Mane Maitheamail,
* Eochaid, Mane Andoe,
* Fergus, Mane Tai,
* Ceat, Mane Morgor,
* Sin, Mane Milscothach,
* Daire, Mane Mo Epert.

During the assembly of Cluitheamnach where the warriors of Ireland prepare the battle of Findchorad against the king of Ulster Conchobar Mac Nessa, Medb learns from one of his druids that Conchobar can only be killed by a warrior called "Mane ". The queen therefore rebaptizes all her sons in the hope that one of them will manage to kill her enemy. But there is confusion on the person, the druid spoke of another Conchobar: the son of Arthur, son of Bruide, son of Dongal, the son of the king ofScotland, who will be killed by Mane Andoe.

At the beginning of the Raid of the Cows of Cooley, when Medb realizes that she will not be able to appropriate the "Brown of Cúailnge" by negotiation, she decides to invade the kingdom of Ulster, taking advantage of a "weakness" of the Ulates. She summons all the kings of the island with their armies and appeals to her sons, the Manes.


King Marc'h is both a character from Celtic mythology and Arthurian legend. It is present in the traditions, Breton and cornish. His name (Marc'h means "horse" in Breton) and his attributes (ears of the same animal) give him a role as a psychopomp, like Epona among the Gallic, then the Gallo-Romans.

In the Breton tradition, rooted in Lower Cornouaille, Marc'h is a legendary king of Cornouaille whose originality is to have horse ears. Moreover, he is one of the protagonists of the legend of Tristan and Iseult, anchored in the historical reality of Brittany and Celtic, between Ireland, and large and small Brittany.

Historian Léon Fleuriot, a specialist in this era, likens him to Komonor (Cunomorus), historic king of Cornwall British in the 6th century, reigning at the same time over the two Domnonées, the Armorican Domnonée and the Domnonée (Cornwall-Devon) of the island of Brittany:

“He (Comonor) is often presented as a vassal of Childebert, a praefectus, says the Chronicle of Saint Brieuc: “Comorus tyrannus, praefectus Francorum regis”. Comonor appears to have been a Britto-Roman. The Life of Saint Paul calls him "King Mark" or Princeps Mark or by his full name Marcus Quonomorius.

The writer Jean Markale, took up this assimilation to King Cumunorus.

In Brittany, near the Cornish town of Douarnenez, the commune of Plomarc'h ("parish of Marc'h" - ploe means parish in Breton) contains foundations which are said to be those of the palace of King Marc'h . The legend says that this king was decked out in horse ears, hidden under a cap and that the disclosure of the secret inevitably led to death. From there, there are several versions: according to one of them, King Marc'h systematically killed all the barbers who served him and knew his secret. It is also said that one of these barbers confided in the earth, a reed grew at this place which was cut by a ringer to make a biniou. When he began to play, the instrument sang "King Marc'h has horse's ears". And according to the late poem by Béroul, a Norman minstrel from the 12th century, it was the king's dwarf astrologer who revealed the secret and was killed by the king.

The physical attribute of horse ears may evoke King Midas from Greek mythology, but the analogy ends there.

A tale, collected by Yann ar Floch, presents a different version of the legend. He is king of Poulmarc'h and has a fantastic horse, which can cross the sea and gallops as fast as the wind. The animal is nicknamed "Morvarc'h", which means "sea horse" in Breton. One day, while hunting, his path crosses that of a deer. No matter how hard he forces his horse, he fails to catch up with her. It is only backed to the edge of the cliff, near the place where the city of Ys was submerged, that he can face him. King Marc'h cocks his bow and shoots an arrow at him, but by a spell, the line turns around and directly kills his precious horse. Driven by fury, he pulls out his dagger, but the deer has disappeared, instead there is a beautiful young girl. It is Ahès, the daughter of Gradlon. In revenge for the chase, she decks the king in ears similar to those of her horse, then sinks into the sea.

Marc'h is the king of Cornouaille in Armorican Brittany, his sister Bleunwenn (Blanche-Fleur) married Rivalen, the king of Loonois, a region in the south of Scotland. Rivalen dies in the war and his wife expires while giving birth to a child: Tristan. The child is taken in by his uncle King Marc'h who raises him. Many years later, during a military expedition in Ireland, Tristan was wounded by killing the giant Morholt, brother of the king of the island. Iseult the king's daughter knows how to heal Tristan's poisoned wound. Once recovered, he returned to Brittany.

Marc'h wants to make Tristan his successor, but the nobles of Cornwall oppose it and the king must marry. The only party of interest is Iseult. Tristan leaves for an embassy and asks the hand of Iseult for his uncle, to the King of Ireland who hastens to accept. Before leaving, the queen entrusts to the servant Brangaine, who is on the trip, a love potion intended for her daughter and for King Marc'h; this potion makes those who drink it eternally fall in love. During the trip Tristan and Iseult drink the potion by mistake and become very fond of each other. Despite their love, Iseult marries Marc'h, but it is the servant Brangaine who takes her place in the king's bed on the wedding night.

The lovers end up leaving, but after a long escape they are found by the king, while they are sleeping in the forest. Marc'h replaces Tristan's sword which is placed between them with his own – an elegant way of telling them that he spares them. The lovers separate and Tristan leaves Cornwall.

Years later, when they met again before dying, Marc'h intervened so that they were buried near each other.

He is called in English Mark of Cornwall (in Latin Marcus, in Cornish Margh, in Welsh March) and he is a legendary king of Cornwall at the beginning of the 6th century. He is Tristan's uncle and Iseult's husband, who have a guilty relationship.

Mark sends Tristan as an ambassador to find his bride, Princess Iseult in Ireland. Tristan and Iseult fall in love and, thanks to a magic potion, begin a passionate carnal relationship that has no equal in medieval literature.


Matholwch is the king of Iwerddon (Ireland), he is notably known for being one of the protagonists of Branwen's Mabinogi. He arrives at the court of Bran the Blessed, son of Llyr, to ask him for the hand of his sister Branwen, and thus conclude a peace treaty. Evnissyen, the girl's half-brother, furious at not having been consulted, cut off the horses' lips, ears and tails Irish, hoping to break the deal. The offense is repaired by donating new mounts and a magic cauldron. Matholwch takes his new wife to his kingdom, where she is well received; from this union will be born a son Gwern. Then she falls into disgrace, she loses her title of queen and has to work in the kitchens. This treatment will last for three years, during which she raises a starling. She sends the bird carrying a message to the paw, to her brother, who immediately undertakes a military expedition. Evnissyen throws the child Gwern into a fire. The battle is a general massacre.


Queen Medb (or Maeve, Maëve) appears in particular in “The raid of the cows of Cooley” (Táin Bó Cúailnge), a long mythical story, which belongs to the Ulster cycle.

Mebd, whose name means "drunkenness (of power)" is the queen of Connaught and the wife of King Ailill, but no king can reign without marrying her, because she personifies Sovereignty. Warrior and ambitious, her very sight weakens the men who look at her, and she is said to run faster than horses.

Following a discussion about their personal wealth, it turns out that Ailill owns one more bull, the Beau Cornu d'Ai. The question is important since in Celtic society, wealth determines royal precedence. She asks Dare, noble of Ulster, to sell her his bull, the mythical Brun de Cualnge, he refuses despite the fortune offered to him. Coalizing the other provinces of Ireland (Leinster, Munster and Meath), it organizes an expedition against Ulster, for the capture of the Cualnge bull. The hero Cúchulainn, defender of Ulster, kills a great number of enemies and, after the awakening of Ulates who had been bewitched, it is the rout of the warriors of Ireland.

The power and freedom of Queen Mebd reveal the status of women in ancient Celtic societies.

In the Táin Bó Cúailnge, Medb and Ailill have an adopted son, Etarcumul (or Etarcomol), who faces Cúchulainn in a duel to the death, while Fergus Mac Roeg unsuccessfully tries to prevent him. Not wanting to kill him, the hero of Ulster shaves the grass under his feet with a stroke of his sword, then he lacerates his clothes without touching him, on the third assault he shaves his skull. With the fight set to end, Cúchulainn cuts him in half from the head.


Known as 'Myrddin' or 'Myrdhin' in Welsh, 'Merzhin' or 'Marzhin' in Breton and Cornish, Merlin is generally depicted as a benevolent mage commanding the natural elements and animals. It is particularly attached to Brittonic mythology, which covered mainland Britain and present-day Great Britain (except Scotland). Nowadays, his name is frequently associated with his function as "enchanteur" (magician), especially since this term served as the title of the French version of a popular cartoon from the 1960s.

Merlin's very name has no clearly defined origin. Some place it at the time of the Celtic Druids. What we do know is that the names “Merddin”, “Myrddin”, then “Merlinus” or even “Merilun” were used successively to describe one and the same character. The name "Merlin" will be adopted later, probably around the 12th century. The legend of Merlin, whose name is associated with various qualifiers such as "enchanter", "magician" or "the Man of the woods", is very complex. We do not know if this character really existed, the manuscript sources of the time having disappeared. Most books that talk about Merlin also mention Arthur and the Knights of the Round Table. These texts date from the 12th century to the 16th century, but stories featuring Merlin go back much longer. It appears that a certain Merlinus Ambroisius would have really existed, of royal descent. The Christian influence in the Middle Ages would have transformed the initial writings into legend: the mother of Merlin having given birth to an "antichrist" with great powers. Also, some women become witches preying on men, even Merlin. In short, his description varies over time until he becomes the Merlin that we know through tales and cartoons: enchanter, prophet, man of the woods, master of animals, sage, a pure magician and close to nature, quite close to the god Pan of Greek mythology who represents the very embodiment of nature. Symbolically, Merlin represents kindness and dreams, nature in its original power. This is probably why he captivates us, because he is the representation of an eternal archetype.

The most famous legend as to his origin makes him the son of a virgin and a demon, hence the Christian parallel and the qualification of antichrist. However, others legends (reported by Stephen Lawhead in his Cycle of Pendragon) link his existence to the legend of Atlantis, where his mother would be native (Charis, daughter of King Avallach of Atlantis), while his father would be Breton (Taliesin son of Elphin, King of Caer Dyvi), according to the Pendragon Cycle legend. These differences of origin come from the fact that no real history has yet been discovered, and, therefore, any version is possible.

Its role in the Arthurian cycle is to help fulfill the destiny of the kingdom of Brittany (mythical kingdom grouping present-day England, Wales and continental Brittany). Through legendary wisdom, he becomes the friend and advisor of King Uther Pendragon. At the death of this one, he organizes the challenge of the Excalibur sword which allows Arthur, illegitimate son of Uther, to succeed his father. Then he encourages Arthur to establish the Round Table so that the knights who constitute it can embark on missions relating to the myth, in particular the famous quest for the Grail. At the end of his life and despite all his knowledge, Merlin will not be able to do anything against the destiny of the kingdom of Brittany and the tragic end of King Arthur.

The legend of Merlin is not originally incorporated into the Arthurian cycle. The character will be in a way "Christianized" thereafter to be able to appear there, but we can recognize the archetype of the druid there: proximity to nature, magical powers, supernatural knowledge, wisdom, long life, role of guide and adviser powerful ones. In a Christian world then in full swing, he represented what remained of the ancient tradition: the druidic world dying.

Seer and magician, Merlin fell, according to legend, madly in love with the fairy Viviane, to whom he confided the secret to binding a man forever. The fairy Viviane therefore undertook to perform this magic, tracing the "nine circles" around the sleeping Merlin. The magic being powerful, Merlin was locked up for eternity in his jail, to the great regret of the fairy Viviane who did not believe that the thing was possible. It is also said that even now he is still locked up. Thus, in the forest of Brocéliande, on a stele is written: “here was locked up Merlin the enchanter by the fairy Vivianne”.


Miach, in Irish Celtic mythology is an important god of the Tuatha Dé Danann (the people of the Dana tribe - ie the gods of Ireland), his name means "the bushel". Like his father Diancecht, he is an expert in medicine, he has a sister Airmed ("the measure") and a double brother Ormiach.

He appears in particular in the epic story "Cath Maighe Tuireadh" (the battle of Mag Tured) which narrates the war between the gods and the Formorians and intervenes after the wound of the god Nuada. The latter, having had his arm severed during the first battle, loses the royalty in favor of Bres. Diancecht, the god-doctor, made him a silver prosthesis, hence his nickname "Airgetlam" (that is to say "the Silver Arm"); this operation allows it to regain sovereignty. Miach will attempt and achieve a more remarkable feat: the transplant of the real arm. This unleashes the fury of the doctor-god who kills his son with three blows of the sword. His sister Airmed, a specialist in medicinal plants, takes care of the three hundred and sixty-five plants that have grown on his grave.

Its power to restore sovereignty to Nuada makes it the symbol of the world's balance.


Midir, in Irish Celtic mythology, is the sovereign god of the Underworld (see article Sidh) of the Tuatha Dé Danann ("people of the tribe of Dana"). It is the equivalent of the Gallic god Medos (Mediris). After the defeat of the Tuatha Dé Danann by the Milesians, he resides in the sidh of Breg Leith. An important personality, he is very present in the stories of the “Etain cycle”. Brother of Dagda, he is sometimes considered as his double. He is in charge of the education of Oengus (also called Mac Oc), the child-god that his brother had with Eithne.

During a feast given by his nephew Oengus, he was injured in one eye and treated by Diancecht, the god-doctor of the Tuatha Dé Danann. As compensation for the damage suffered, he asks to be given a cloak, a chariot and the most beautiful girl in Ireland, who happens to be the goddess Tin. The moment they meet, he immediately falls in love with her and decides to make her his mistress. But he already has a legitimate wife, the magician Fuamnach, who is extremely jealous. She will pursue the intruder using the most powerful spells of her magic, but she does not have the power to kill her. She transforms it into a pool of water by touching it with a mountain ash branch, then into a fly that a druidic wind carries in the air for seven years. She becomes a tiny earthworm and falls into a cup. In this form, she is swallowed and then "delivered" by the wife of the King of Ulster, Etar. This is how she can be reborn. Fuamnach cannot reconquer Midir who, tired of these adventures, has her assassinated.

Étain marries Eochaid Airem, the Ard ri Érenn (Supreme King of Ireland), but Midir, who wants her back, offers the king a game of chess, in which the stake is his own wife. Eochaid loses, but does not keep his word and definitively banishes the god from his capital Tara. However, Midir manages to enter the city and the palace, and joins Étain. Both turn into swans and fly away. The king pursues them in all the sidhs, but the god will use his magic: he transforms fifty young girls into look-alikes of Tin and asks Eochaid to choose one, only one. The king complies and sure of his choice sleeps with the girl, who turns out to be his own daughter. From this incestuous relationship, a daughter will be born, at the origin of a dynasty of kings.


Mile, also known as Milésius, or Míl Espáine, is the mythical ancestor of the Gaèls (or Goidels) who are sometimes called the "sons of Mile" or "Milesians". He is a warrior from Spain whose name means "combat", "destruction".

Selon le Lebor Gabála Érenn (Book des Conquêtes d’Irlande), les Milésiens sont les derniers envahisseurs de l’Irlande et, à la différence de leurs prédécesseurs, ce sont des humains. Comme Partholon, leur débarquement a lieu le jour de la fête de Beltaine (1er mai) sous la direction de leur file (druide-poète, voir Barde) et juge Amorgen Glungel.

The Milesians emerge victorious from the war which opposes them to the “Tuatha Dé Danann” (the People of the Goddess Dana) and the latter are forced to take refuge in Sidh, that is to say the Celtic Other World. Eranann, the last of Mile's children whose name means "little Irishman", loses his life carried away by the "druidic wind".


Mog Ruith, in Irish Celtic Mythology, is a mythical Druid. He is nicknamed the "Servant of the Wheel" because, as a representation of Dagda, his attribute is the cosmic wheel. This 'creeping wheel' (roth ramhach in Gaelic) deafens anyone who hears it, causes blindness to anyone who sees it and kills those on whom it falls. He has a daughter, herself a “druidess”, Tlachtga.

The character appears mainly in a text entitled Forbuis Droma Damhghaire (the Siege of Druim Damhghaire), which recounts a warlike expedition of the Ard ri Érenn (Supreme King of Ireland) Cormac Mac Airt against the province of Munster which does not pay the " boroma”. It is a tribute in cattle that the kings of provinces owe to the Ard-ri. The people of Munster call upon the druid Mog Ruith, whose powerful magic brings them victory. He is one of the most powerful druids in mythology, he is also a warrior who has the distinction of being “blind”; blindness is a quality for some druids since it gives them the gift of clairvoyance. His residence is called “Darbre” (or “Dairbre”), which means oak forest.

The early Irish Christians made him the instigator of the execution of Saint John the Baptist, in order to destroy his reputation, proof that the myth was important.


Momoros, in Gallic Celtic mythology, is a druid, whose name means "the swan".

According to legend, he is with King Atepomaros one of the founders of the city of Lyon. Coming from the north, they stopped on a hill on the banks of the Saône. According to the instructions of an oracle, they undertake the construction of a city, when the site is invaded by a multitude of crows. This animal being the harbinger of the presence of the god Lug, it is decreed that the city will be called “Lugdunum” that is to say the fortress (or hill) of Lug.


In Irish Celtic mythology, before their arrival in Ireland, the Tuatha Dé Danann resided in four "Islands in the North of the World" named Falias, Findias, Gorias and Murias; it is in these places that they practiced Art, that they learned Poetry and wisdom.

Morfessa, whose name means "Great Knowledge" was the druid who ruled the island of Falias. This is where the Stone of Fal talisman comes from which symbolizes legitimate power and Sovereignty. It is placed in Tara, the mythical center of Ireland. If a man is worthy of supreme kingship, the Stone will scream when he sits on it.

Cúchulainn would have shattered it with a blow of her sword, as she would have remained silent during her attempt.


Morrigan (or Morrigu) means Great Queen. Daughter of Ernwas, of the Tuatha Dé Danann, she is the Irish goddess of war or more exactly, she is the warrior aspect of Sovereignty or death in Ireland. It is also known as Bodb (Crow) or Macha (Plain). She is the wife of the god-druid the Dagda. She sometimes appears as a flight of three crows or as a raven. Like the other deities, she is only an avatar of the great female goddess Brigit.

She travels the battlefields in a red crew, on a chariot guided by a single one-legged horse. During wars, she appears in various animal forms and to invoke her, you have to croak. Among other powers which are numerous, it can inspire fear or courage in warriors. The battle dead are the "Morrigane acorns".

In the Táin Bó Cúailnge (the raid of the cows of Cooley), under the appearance of a beautiful and young girl with red eyebrows, she tries to seduce Cúchulainn, who refuses her advances. She threatens him in the guise of different animals, and while he fights, she wraps herself around his thigh as an eel. The hero gets rid of it and wounds it. He is then absent from the fight for a long time, but when he returns to fight she appears to him for the last time as a young woman washing bodies dripping with blood. He then knows that his time has come.

Later, it is as a crow that she attends the agony of Cúchulainn, perched on her shoulder.