Gilfillan

Etymology
From Scottish Gaelic Gille Fhaolain, from Irish Gaelic Giolla Fhaoláin, meaning “servant of (Saint) .” The personal name, Faolán, is thought to be a diminutive of, meaning "wolf" or "little wolf".

Statistics

 * According to the 2010 United States Census, Gilfillan is the 20601st most common surname in the United States, belonging to 1286 individuals. Gilfillan is most common among White (94.17%) individuals.