Fay

The Irish name Fay has a long Gaelic heritage to its credit. The original Gaelic form of the name Fay is O Fathaigh, derived from the word "fothadh," meaning "foundation." The surname Fay was first found in Galway (Irish: Gaillimh) part of the province of Connacht, located on the west coast of the Island, where they held a family seat from very ancient times.