What is gilmore name origin?

The surname Gilmore is of Gaelic origin, derived from the Irish surname Mac Giolla Mhir, which means "son of the servant of St. Mhir." The name was originally associated with the northern part of Ireland, specifically County Antrim, where the Mac Giolla Mhirs were known for their strong support of the O'Neills, a prominent Irish clan. Over time, the name evolved into Gilmore and spread beyond Ireland to other countries, including the United States, Canada, and Australia. Today, Gilmore is a relatively common surname, particularly in English-speaking countries.