1) Scottish boy name 
Colquhoun n is a surname of Scottish origin. It is a habitational name from the barony of Colquhoun in Dumbartonshire. The name is thought to be derived from the Gaelic elements còil (`nook`), cùil (`corner`), or coill(e) (`wood`) + cumhann (`narrow`). Calhoun and Cahoon are variants of the surname Colquhoun. They are generally found onl...