DonnellyIrish From Irish Ó Donnghaile meaning "descendant of Donnghal". The given name Donnghal means "brown valour", from donn "brown" and gal "valour". This surname is associated with the descendants of Niall of the Nine Hostages.
HackettEnglish From a diminutive of the medieval byname Hake, which was of Old Norse origin and meant "hook".