Submitted NameRevisions Save Type Surname (from given name) Usage Irish Edit Status Status [show contributorshide contributors] Added 5/21/2012 by erb816 Edited 6/10/2012 by erb816 Meaning & History Variant of MACCARTHY. A famous bearer was the famous western outlaw William Henry McCarty, also known as Billy the Kid. His other aliases included William H. Bonney and Henry Antrim.