Submitted NameRevisions Save Type Surname (from nickname) Usage Irish (Anglicized) Other Forms FormsDinneen Edit Status Status [show contributorshide contributors] Added 7/6/2017 by LMS Edited 5/14/2019 by SeaHorse15 Meaning & History 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".
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