
The map above shows the distribution of the surname Kilgarriff in Ireland in the mid-1800s as listed in the Griffith Valuation of Ireland.
Almost all of them were spelled "Kilgarriff" - except for Co Sligo in which most of them were spelled with one "r".
Apparently some of the Kilgarriffs eventually changed their name to Garvey. There were about 10 times as many Garveys (500) as Kilgarriffs (45) in Griffith's Valuation - but alot of those Garveys were in areas near the Kilgarriffs.