DNA John pointed out this very good page for more history. Note well: the original page was hosted by angelfire.com, a free service that has allowed unscrupulous videos that slow the site down. We are hosting it at treinfhir.org to make the site more readable.
A gathering place for all who descended from Treinfhir: Treanor, Traynor, Trainor, Trainer, Trenor, Trayner, Trener, Treinfhir, McCreanor, Treynor