Boyle

The Irish surname Boyle comes from the Irish Gaelic O Baoighill, possibly derived from the earlier Irish word "baigell," which meant "having profitable pledges." The surname Boyle was first found in Donegal (Irish: Dún na nGall), northwest Ireland in the province of Ulster, sometimes referred to as County Tyrconnel, where they were descended from King Maoldun Baoghal (meaning "peril") of the Heremon line of Irish Kings.