Oengus/Oengus Mac ind Oc- son of Eochaid Ollathair & Eithne (Boand), foster-son of Midir

Ailill - lives in Mag Inis in Ulster; father of Étaín Echraide in Part I; in Táin Bó Cualgne, the husband of Medb of Connacht

Ailill Angubae – brother of Eochaid Feidlech and Eochaid Airem; son of Find; in Part II

Bóand - 'white cow,' goddess for whom the River Boyne is named; also known as Eithne, 'kernel'; wife of Elcmar [elsewhere of Nechtan & (as Bui, for whom Cnogba/Knowth is named) Lugh]

Bres - son of Elatha, lived in Mag Inish

Bresal Etarlam - druid, foster-father of Fuamnach; lived at Oenach Bodbgnai [location unknown]

Conchobar – king of northern province (Ulster) that includes Inber Cichmane; son of Ness

Cú Rúi – 'hound' 'of Rúa'; one of five kings under Eochaid Airem; also known as Cú Roi

Dagda – 'the Good God'; also known as Eochaid Ollathir; father of Oengus; served (with Lugh and Ogma) as one of three protectors of Fúamnach

Dian Cecht - physician of the Tuatha Dé

Eochaid Ollathair - the Dagda, of the Tuatha Dé, father of Oengus mac ind Oc; lived at Uisneach; one of three gods of Dana who accompany Fuamnach on visit to Midir; in Part I

Eochaid/Eochaid Airem – Airem 'ploughman'; another aspect of Eochaid; high king in Part II

Eochaid Feidlech – brother of Eochaid Airem and Ailill Angubae; son of Find; in Part II. In Da Derga's Hostel, he rather than Eochaid Airem marries Étaín; father of Medb of Connacht, Medb Redside of Tara.

Eithne - wife of Elcmar, desired by the Dagda; also known as Boand; mother of Oengus mac ind Oc

Elcmar of the Brug - [=Nectain?] Husband of Eithne; lived at the Brug until displaced with Dagda's help by Oengus

Étaín Echraide - daughter of Ailill; desired by Midir; lived in Mag Inish; later daughter of Etar; as simply Étaín – daughter of Étaín Echrade and mother of Conaire Mor (or, in Da Derga's Hostel, his grandmother

Etar - champion from Inber Cichmaine [at Bangor on the south shore of Lough Neagh, Co. Down] in province of Conchobar (Ulster); second father of Étaín

Eterscélae – a king who carried off and married the daughter of Eochaid and Étaín's daughter.

Factna – Eochaid Airem's doctor; according toGault, probably identical with Fregna in "Dream of Oengus"

Find – 'fair, white'; son of Findlug (lug = 'brightness, carrier of light'); father of Eochaid Feidlech, Eochaid Airem, and Ailill Angubae

Findlám – 'white hand'; a herdsman of Temair (Tara) at whose home on Slíab Fúait the daughter of Eochaid and Étaín's daughter is abandoned.

Fuamnach - wife of Midir

Lugh - one of the three gods of Dana(with the Dagda and Ogma); accompanies Fuamnach on visit to Midir for her protection

Mac Oc – 'the young son'; alternative name for Oengus

Mess Gegra – 'fosterling of Gegra'; one of five kings under Eochaid Airem, of Leinster; brother of Mac Dátho

Mider (Midir) – foster father of Oengus; elsewhere the son or brother of Eochaid

Ogma - one of the three gods of Dana (with Dagda & Lugh); accompanies Fuamnach on visit to Midir for her protection; supposed inventor of writing, thus ogham.

Samair – one of two hounds that come from Mider's síd.

Scleth – one of two hounds that come from Mider's síd.

Sigmall – grandson of Midir living at Síd Nenta

Tigernach Tétbandach – one of five kings under Eochaid Airem

Tríath - son of Febal (or Gobor), of the Fir Bolg, another foster-son of Midir