Traynor (also Trainor, Trainer, Treanor, Trener, Trenor, Trinor, Tronor, Trynor, Triner, Trinner, MacTreanor, MacCreanor, and McCrainor) is a surname of ancient Irish, or potentially Ulster Scots and English origin. It descends from "Threin Fhir"means "strong man" in Irish Gaelic. The name is descended from the Colla Da Crioch and is first mentioned in the Annals of the Four Masters compiled in the years 1632-1636 at the convent of Donegal, by the chief author, Michael O'Clery, a monk of the order of St. Francis.
Common in Monaghan, and to a lesser extant throughout Ulster, the name is associated with Kelley, Madden and other Ui Maine ancestry. All male Traynors tested to date with Family Tree DNA Big Y project have traced their Y-DNA to z2961+ m222- as a adjunct branch of the Ui Maine haplogroup descending from Máine Mór. Legends from Clogher, Tyrone, Northern Ireland associate the name with Aedh Mac Cairthinn, the first Bishop of Clogher.
The Trénor family name originates with Thomas Trenor Keating who emigrated from Ireland to Valencia, Spain in 1823.
Scot Traynors may be descendants of Clan Armstrong and came to Ireland during the Plantation of Ulster. A third version is from the pre-7th century Olde English 'trayne' meaning to trap or snare, and hence a name for a hunter.
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