McKinley (surname) McKinley (surname) McKinley is a Scottish and Irish surname historically associated with northwestern Ireland's County Donegal, and the over-kingdom of Ulaid in northeastern Ireland and the Scottish Highlands. The McKinley are of the ancient Ulaid race and are a branch of its "Red Branch" MacDunleavy (dynasty) royal house of the Dal Fiatach which dominated the kingship of the over-kingdom of Ulaid (original Gaelic language Mac Duinnshléibhe). Etymology for the origins of the surname proposes that the Anglicized surname McKinley, like the surname MacNulty (Gaelic Mac an Ultaigh, trans. "son of the ultonian, ulidian or ulsterman"), arose originally from a Gaelic
Scottish Gaelic name MacKonochie, MacOnachie, MacOnechy, MacOnochie, Donohue" or "Donohoe" (ignoring the Mac/Mc variation). Note that Scottish Gaelic does not put a space between the and the second element, whereas in Irish, there is a space: Nicknames (, ) in Gaelic operate similarly to those in other languages and usually indicate a physical characteristic, an occupation, a location or an incident the person is associated and so forth. Some examples Due to the relative paucity of names and surnames in Gaelic, the official name of a person (i.e. first name plus a surname, in Gaelic or English) is rarely used in Gaelic speaking