2,038 Global Finnigan Family Members

Finnigan Family History

This interesting surname is of Irish origin, and is an Anglicization of the Gaelic "O' Fionnagain", meaning the descendant(s) of Fionnagan, an Old Irish personal name derived from the word "fionn", white, fairheaded. There are two distinct septs of this name; one was located on the border of Counties Galway and Roscommon, and the other was located in Oriel, which covered Counties Armagh, Monaghan and parts of South Down, Louth and Fermanagh, and was known originally as "Orghiall". However, Finnigan or Finnegan has the same source as the surname Finn, which means that Finnigan could be a diminutive of Finn; the first recording (see below) is from this source.