Originating from Ireland, the surname Dooley is a variant of the Gaelic name 'Ó Dubhthaigh', which translates to 'descendant of the dark-haired one'. It's predominantly found in County Kilkenny and was originally borne by a family that claimed descent from the ancient O'Davoren sept. Over time, it has also become established as a given name in various parts of the world.
"I'm surprised to see only five people named Dooley were born in total over the span of a year."