What is "traynor"

Traynor (also Trainor, Trainer, Treanor, Trener, Trinor, Tronor, Trynor, Triner, Trinner, MacTreanor, MacCreanor, and McCrainor) is a surname of Irish, Ulster Scots and English origin. It means "strong armed man" in Ulster Gaelic. The Irish version of 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. Other 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. http://1641.tcd.ie/deposition.php?depID