モリガンは主に戦争と運命に関連しており、特に運命、死、または戦いの勝利を予言するものである。彼女は、しばしば烏、バドブとして登場する<ref name=":0">The Celtic Myths: A Guide to the Ancient Gods and Legends , Aldhouse-Green Miranda, Thames & Hudson, 2015, isbn:978-0-500-25209-3, New York, page125</ref>。モリガンは戦士を戦いに駆り立て、敵に勝利をもたらすことができる。モリガンは戦士に勇敢な行為を奨励し、敵に恐怖を与え、死を運命づけられた者の血に染まった服を洗う姿で描かれる<ref>Ó hÓgáin, 1991</ref><ref name=sessle>Sessle Erica J., 1994, Exploring the Limitations of the Sovereignty Goddess through the Role of Rhiannon , Proceedings of the Harvard Celtic Colloquium, volume14, pages9–13, issn:1545-0155, jstor:20557270</ref>。モリガンは最も頻繁に戦闘と戦争の女神として見られるが、大地と君主の女神の現れとも見られ<ref>Ó hÓgáin, 1991, pp307–309</ref><ref name="Koch, John T. 2006">Koch, John T. ''Celtic Culture: A Historical Encyclopedia''. ABC-CLIO, 2006. p.1622</ref>、主に領土とその人々の守護神としての女神の役割を表している<ref name="lysaght">Lysaght Patricia, Traditions of the Banshee, Miranda Green, Sandra Billington, The Concept of the Goddess, Psychology Press, 1996, pages157–163</ref><ref name="tymoczko">Maria Tymoczko, The Irish Ulysses, University of California Press, 1994, pages=98–101</ref>。
モリガンは、しばしば「3人のモリガン」と呼ばれる3人組の姉妹で表現される<ref>Ó hÓgáin, 1991, pp307–309</ref><ref>Sjoestedt Marie-Louise, Celtic Gods and Heroes, 18 September 2000, Dover Publications, isbn:978-0-486-41441-6, pages31–32</ref><ref>Davidson Hilda Ellis, Myths and symbols in pagan Europe: early Scandinavian and Celtic religions, 1988, Syracuse University Press, Syracuse, isbn:=978-0-8156-2441-7, pages97</ref>。バドブ、マハ、ネマイン<ref>MacKillop, 1998, pp335–336</ref>とされることもあれば、バドブ、マハ、アナンドとされることもある(後者はモリガンの別称とされる)<ref name="LGE-62,64">''[http://www.maryjones.us/ctexts/lebor4.html Lebor Gabála Érenn §62, 64]: "Badb and Macha and Anand... were the three daughters of Ernmas the she-farmer." "Badb and Morrigu, whose name was Anand."</ref>。
The Morrígan is often described as a [[Triple deity|trio]] of individuals, all sisters, called "the three Morrígna". Membership of the triad varies; sometimes it is given as [[Badb]], [[Macha]], and [[Nemain]]{{sfn|MacKillop|1998|pp=335–336}} while elsewhere it is given as Badb, Macha, and [[Anu (Irish_goddess)|Anand]] (the latter is given as another name for the Morrígan).<ref name="LGE-62,64">''[http://www.maryjones.us/ctexts/lebor4.html Lebor Gabála Érenn §62, 64]: "Badb and Macha and Anand... were the three daughters of Ernmas the she-farmer." "[[Badb]] and Morrigu, whose name was Anand."</ref> It is believed that these were all names for the same goddess.{{sfn|Ó hÓgáin|1991|pp=307–309}}<ref name="MacCana">{{cite book |last=Mac Cana |first=Prionsias |url=http://www.ricorso.net/rx/library/criticism/classic/Celtiana/M-Cana_P/Celtic_Myth/3_Goddess.htm |chapter=The Goddesses of the Insular Celts |title=Celtic Mythology |publisher=Hamlyn |year=1970}}</ref> The three Morrígna are also named as sisters of the three land goddesses [[Ériu]], [[Banba]], and [[Fódla]]. The Morrígan is described as the envious wife of [[The Dagda]] and a shape-shifting goddess,<ref>[https://celt.ucc.ie//published/T106500D/text049.html ''The Metrical Dindsenchas''] "Odras" Poem 49</ref> while Badb and Nemain are said to be the wives of [[Neit]].{{sfn|Ó hÓgáin|1991|pp=307–309}} She is associated with the [[banshee]] of later folklore.{{sfn|Ó hÓgáin|1991|pp=307–309}}
==Etymology==