Submitted NameRevisions Save Type Surname (from given name) Usage Irish Other Forms FormsDea Edit Status Status [show contributorshide contributors] Added 6/10/2016 by LMS Edited 6/17/2016 by LMS Meaning & History Anglicized form of Gaelic Ó DEAGHAIDH, ‘descendant of DEAGHADH’, a personal name of uncertain origin. It may be a compound of deagh- ‘good’ + ádh ‘luck’, ‘fate’.