Laeg:  son of Riangabair and Cuchulain’s faithful charioteer (pronounced Lay)

Latharne:  Larne, in the County Antrim

Lebarcham:  a sorceress

Leire:  in the territory of the Fir Roiss, in the south of the County Antrim

Ler:  the Irish sea-god

Lethglas:  Dun Lethglaisse, now Downpatrick, in Ulster

Lettre Luasce:  between Cualnge and Conalle

Lia Mor:  in Conalle Murthemni

Liath Mache:  ‘the Roan,’ one of Cuchulain’s two horses.

Lia Ualann:  in Cualnge

Line (or Mag Line):  Moylinne, in the County Antrim

Loch Ce:  Lough Key, in the County Roscommon

Loch Echtrann:  Muckno Lake, south of Sliab Fuait, in the County Monaghan

Loch Erne:  Lough Erne, in the County Fermanagh

Loch Ri:  Lough Ree, on the Shannon, in the County Galway

Loegaire Buadach:  son to Connad Buide and husband of Fedlimid Nocruthach; one of the chief warriors of Ulster (pronounced Layeray)

Lothor:  a place in Ulster

Luachair:  probably Slieve Lougher, or the plain in which lay Temair
Luachra, a fort somewhere near the town of Castleisland, in the County
Kerry

Lug:  the divine father of Cuchulain

Lugaid:  father of Dubthach

Lugmud:  Louth, in the County of that name

Luibnech:  possibly a place now called Limerick, in the County Wexford

MacMagach:  relatives of Ailill

MacRoth:  Medb’s chief messenger

Mag:  ‘a plain’ (pronounced moy)

Mag Ai:  the great plain in the County Roscommon, extending from Ballymore to Elphin, and from Bellanagare to Strokestown (pronounced Moy wee)

Mag Breg:  the plain along and south of the lower Boyne, comprising the east of County Meath and the north of County Dublin (pronounced Moy bray)

Mag Cruimm:  south-east of Cruachan, in Connacht

Mag Dea:  a plain in Ulster

Mag Dula:  a plain though which the Do flows by Castledawson into Lough
Neagh

Mag Eola:  a plain in Ulster

Mag Inis:  the plain comprising the baronies of Lecale and Upper
Castlereagh, in the County Down

Mag Line:  Moylinne, a plain to the north-east of Lough Neagh, in the barony of Upper Antrim

Mag Mucceda:  a plain near Emain Macha

Mag Trega:  Moytra, in the County Longford

Mag Tuaga:  a plain in Mayo

Maic Miled:  the Milesians

Mairg:  a district in which is Slievemargie, in the Queen’s County and the
County Kilkenny

Manannan:  son of Ler, a fairy god

Margine:  a place in Cualnge

Mas na Righna:  Massareene, in the County Antrim

Mata Murisc:  mother of Ailill

Medb:  queen of Connacht and wife of Ailill (pronounced Mave; in modern
Connacht Irish Mow to rhyme with cow)