Coat of Arms
 

Arms: Argent, fretty sable, in each interstice a crescent gules.
Crest: A griffin sejant per pale argent and sable, winged or.

The coat of arms is Irish in origin and applies to Creevy, Creevey, McCreevy and McCreevey.

 
Argent = silver  (denoting peace and sincerity)
Sable = black  fretty = fretwork (depicting constancy and sometimes grief)
Or = gold
Gules = red (denoting military fortitude)
The Crescent was associated with faith and hope