Type Surname (from nickname)
Usage Irish (Anglicized)
Other Forms FormsDinneen
Edit Status Status
Contributor Contrib.LMS on 7/6/2017
Reduced Anglicized form of Gaelic Ó Duinnín which meant "descendant of Duinnín". The byname Duinnín was derived from a diminutive of Gaelic donn meaning "brown" (i.e. "brown-haired man") or "chieftain".