Geary Family History
Geary Name Meaning
Irish: reduced Anglicized form of Gaelic Ó Gadhra ‘descendant of Gadhra’ (see O’Gara). See also McGeary. English: from a personal name derived from Germanic ger, gar ‘spear’, a short form of any of various compound names with this as a first element (see, for example Garrett). English: nickname for a wayward or capricious person, from Middle English ge(a)ry ‘fickle’, ‘changeable’, ‘passionate’ (a derivative of gere ‘fit of passion’, apparently a Scandinavian borrowing). Possibly an altered spelling of German Gehring or Gehrig.
Source: Dictionary of American Family Names ©2013, Oxford University Press