Delga:  see Dun Delga

Delga Murthemni:  Dundalk

Delinn:  a place or river near Kells between Duelt and Selaig, on Medb’s march from Cruachan into Ulster

Delt:  a place north of Drong, on Medb’s march from Cruachan into Ulster

Delt:  a river in Conalle Murthemni

Dergderc:  Lough Derg, an expansion of the Shannon near Killaloe

Dichaem:  a river in Conalle Murthemni

Domnann:  see Irrus Domnann

Drong:  a river in the land of the men of Assail, in Meath

Druim Caimthechta:  north-east of Druim Cain

Druim Cain:  possibly an older name for Temair (Tara)

Druim En:  in South Armagh; probably a wooded height, near Ballymascanlan, in the County Louth

Druim Fornocht:  near Newry, in the County Down

Druim Licce:  north-east of Gort Slane, on Medb’s march from Connacht into
Ulster

Druim Salfinn:  now Drumshallon, a townland in the County Louth, six miles north of Drogheda

Dub:  the Blackwater, on the confines of Ulster and Connacht; or the confluence of the Rivers Boyne and Blackwater at Navan

Dubh Sithleann (or Sainglenn):  the name of one of Cuchulain’s two horses

Dubloch:  a lake between Kilcooley and Slieve Bawne, in the County
Roscommon, on Medb’s march from Cruachan into Ulster

Dubthach Doel Ulad:  the Ulster noble who shares with Bricriu the place as prime mover of evil among the Ulstermen (pronounced Duffach)

Duelt:  north or north-west of Delt, on Medb’s march from Cruachan into
Ulster

Dun da Benn:  Mount Sandle, on the Bann, near Coleraine in the County Derry

Dun Delga:  Dundalk, or the moat of Castletown, on the east coast near
Dundalk; Cuchulain’s home town

Dun macNechtain Scene:  a fort in Mag Breg, at the place where the Mattock falls into the Boyne, about three miles above Drogheda

Dun Sobairche:  Dunseverick, about three miles from the Giants’ Causeway, in the County Antrim

Elg:  an old name for Ireland

Ellne:  probably east of the River Bann, near Coleraine

Ellonn:  a place in Ulster

Emain Macha:  the Navan Fort, or Hill, two miles west of Armagh; King
Conchobar’s capital and the chief town of Ulster (pronounced Evvin Maha)

Emer Foltchain:  wife of Cuchulain (pronounced Evver)

Enna Agnech:  according to the Annals of the Four Masters, he was High King of Ireland from 312 to 293 B.C.

Eo Donn Mor:  north-east of Eo Donn Bec, in the County Louth

Eocho Fedlech:  father of Medb; according to the Four Masters, he reigned as monarch of Ireland from 142 to 131 B.C. (pronounced Yokh-ho)

Eocho Salbuide:  King of Ulster and father of Cethern’s wife, Inna

Eogan macDurthachta:  a chief warrior of Ulster and Prince of Fernmag