Where your folk
came from

MacIldoon
Seen in Armagh.
MacIldowney
A Derry name. See MacEldowney.
MacIlduff
Meaning black haired one. Seen in Tyrone. Connected to Duff.

MacIlhatton
Long associated with the northern most parts of Antrim and Derry. Linked to MacHatton, Hatton and MacClatton.
MacIlhenny
A popular Donegal name.
MacIlholm
A Fermanagh-Tyrone clan.
MacIlhoyle
Related to Coyle.

MacIllesher
Once of Fermanagh, nearly all anglicised to Greene.
MacIlravy
Or MacElreavy. Found in northern parts of Antrim and Derry.

MacIlroy
The anglicisation of MacGiolla Rua (rua is red). Linked to Gilroy. Found in Tyrone and Fermanagh.
MacIlvany
Linked to MacElvenna and Mulvenna.
MacIlveen
Seen in Down.
MacIllwaine
Or Elwain. Usually a form of MacIlveen. See Down-Antrim area.
MacInerney
A great Clare name. Nerney in parts of north Connacht. Connected to Kinnerk.
Ingram
Scottish and usually found in Ulster.
MacInnes
A Scottish version of MacGuinness.
MacIntyre
Usually of Scottish origin. Connected to MacAteer.

Ireland
Name probably came from Irish immigrants to England who returned. Common enough in north east.
Irvine
Or Ervine. Scottish and Ulster.
Irwin
Scottish and thus the Ulster connection.
Ivers
Usually the anglicisation of MacIomhair. See Galway area.
MacIvor
Usually a synonym of MacKeever and found in Tyrone.