Geary Family History
Geary Surname Meaning
Irish (Cork): shortened Anglicized form of Gaelic Ó Gadhra ‘descendant of Gadhra’ (see O'Gara). Irish: alternatively possibly a shortened form of McGeary.
English: from the Old French personal name Geri, ancient Germanic Geric from gēr ‘spear’ + rīc ‘power(ful)’.
English: nickname for a wayward or capricious person from Middle English ge(a)ry ‘fickle, changeable, passionate’. See Gear.
Possibly an altered form of Swiss German Gehri or Gehry, variants of Gehr.
Source: Dictionary of American Family Names 2nd edition, 2022