When used as a given name, Morrighan is a feminine spelling connected with Morrígan, the name of a female figure in medieval Irish literature. Its second element means “queen,” but the first element has been interpreted in two different ways. The resulting translations are commonly expressed as “phantom queen” or “great queen”; neither should be presented as an undisputed literal meaning.
The spelling has genuine roots in the manuscript tradition, but the evidence is for a mythological name or designation—not for a traditional hereditary surname or an ancient Irish family line. When Morrighan is used as a personal name today, it is best understood as a modern adoption of a name known from mythology.
Meaning: Why Two Translations Exist
The secure part of the formation is Old Irish rígan or rígain. The Royal Irish Academy's electronic Dictionary of the Irish Language (eDIL) defines this word as “a queen or noble lady.” The disagreement concerns the first syllable:
- With a short vowel,
mor-has been compared with words such as Old High German mara and Old English mære, referring to a frightening supernatural female. This produces interpretive translations such as “phantom queen” or “nightmare queen.” - With a long vowel, Old Irish
mórmeans “great,” giving “great queen.”
The distinction is visible in the written forms. eDIL's entry for *Morrígan, morrígu* explains that the first syllable was commonly associated with mór during the Middle Irish period and was therefore often written with a long-vowel mark. Noémie Beck's study of the figure likewise notes both short-o forms (Morrígain, Morrígu) and long-ó forms (Mórrígain, Mórrígu) in the manuscripts. The spelling variation is therefore part of the historical evidence, not a problem that can be solved by choosing the most appealing English gloss.
“Demon queen,” sometimes found in popular name lists, is an especially blunt rendering. eDIL does record morigain as a gloss for Latin lamia and records plural forms used of supernatural beings. That evidence helps explain the ominous interpretation, but it does not make “demon queen” a certain word-for-word translation, and it says nothing about the character of a modern person given the name.
What the Spelling Morrighan Represents
Morrighan is not simply a typing error for Morrigan. eDIL includes lowercase morrighan among the historical forms it cites, as a variant reading associated with Acallam na Senórach. The same dictionary records ríghan as a later spelling of rígan, which explains the gh in Morrighan.
The principal forms a reader is likely to meet are:
- Morrígan — the main eDIL headword, with a long mark on the second
i; - Morrígu — another medieval form of the same name;
- Mórrigan or Mórrígan — forms with a long first vowel, reflecting the “great” interpretation;
- Morrigan — an unaccented English-language form;
- Morrighan — an attested
ghspelling and the form covered by this page.
These forms belong to the same name tradition, but they should not be silently substituted in modern records. For an individual bearer, the spelling on that person's own legal, family, or published records remains the relevant one.
The Figure Behind the Name
The mythological context is Irish and specifically medieval. eDIL calls the Morrígan an ancient Irish war-goddess and documents forms of the name across Irish texts. Beck identifies her appearances in three major battle narratives: Cath Muige Tuired Cunga, Cath Maige Tuired, and Táin Bó Cúailnge.
The Táin gives a concrete example of the martial and shape-changing character later associated with the name. In Cecile O'Rahilly's translation of the Book of Leinster version, section 17 of *Táin Bó Cúalnge* has the Morrígan oppose Cú Chulainn while he fights Lóch: she appears as a heifer, then as an eel, and then as a she-wolf. This episode supports descriptions of her as a war-related and shape-changing figure more directly than generalized modern labels do.
Some familiar summaries call her a crow or raven goddess, a sovereignty goddess, or one member of a fixed triple goddess. The sources are less tidy. eDIL records her in bird form and also notes that she is sometimes confused with Badb and Macha; it additionally records morrígan as a generic term in some contexts. In a modern scholarly overview, historian Ronald Hutton emphasizes that the medieval writers give inconsistent relationships among several Irish war goddesses. War is the clearest recurring association, while a single, fully coherent identity should not be imposed on every text.
Given Name, Not a Traditional Surname
The medieval examples establish the mythological name, not ordinary naming practice. Heather Rose Jones's survey of Irish and Welsh names reports no evidence that Morrígan was used as an ordinary personal name before 1600 and distinguishes legendary names from names documented for historical people. That makes it unsafe to describe Morrighan as an old Irish given name in continuous use from the Middle Ages.
It is also not documented here as a conventional Irish hereditary surname. A modern occurrence in a surname field could be a chosen surname, a transcription issue, or a database field error, but the spelling alone cannot decide which. Most importantly, sharing this name does not imply descent from a mythological figure or from every other bearer.
Morrighan, Morgan, and Muirgen Are Different Names
Visual resemblance has encouraged several false connections:
- Morgan is a Welsh personal name with a different linguistic history. It is not a shortened form of Morrígan.
- Morgaine is associated with the French development of the Arthurian name used for Morgan le Fay, not with the Irish Morrígan.
- Muirgen is an Irish name built from a different formation and commonly interpreted as “sea-born.” It is not an older spelling of Morrighan.
Jones's comparative name study treats these look-alike names separately and warns against making them interchangeable merely because they share the letters m-r-g-n. This distinction matters both for name meaning and for identifying a person in historical records.
References and Further Reading
- Gregory Toner, Sharon Arbuthnot, Máire Ní Mhaonaigh, Marie-Luise Theuerkauf, and Dagmar Wodtko, eds. “Morrígan, morrígu,” *eDIL: Electronic Dictionary of the Irish Language*. Royal Irish Academy, revised 2019.
- Gregory Toner et al., eds. “rígain, rígan,” *eDIL: Electronic Dictionary of the Irish Language*. Royal Irish Academy, revised 2019.
- Noémie Beck, “Les cheveux de la Morrígain,” Études celtiques 38 (2012), pp. 229–257.
- Cecile O'Rahilly, ed. and trans. *Táin Bó Cúalnge from the Book of Leinster*, section 17. Dublin Institute for Advanced Studies, 1970; electronic edition, CELT, University College Cork.
- Heather Rose Jones, “Concerning the Names Morgan, Morgana, Morgaine, Muirghein, Morrigan, and the Like,” Medieval Names Archive, 1997.
- Ronald Hutton, “The Morrigan: The Nightmare Queen,” Gresham College lecture and transcript, 17 June 2026.