ChevalierFrench From a nickname derived from French chevalier meaning "knight", from Late Latin caballarius "horseman", Latin caballus "horse".
EarlEnglish From the aristocratic title, which derives from Old English eorl meaning "nobleman, warrior". It was either a nickname for one who acted like an earl, or an occupational name for a person employed by an earl.
FoleyIrish From Irish Ó Foghladha meaning "descendant of Foghlaidh". The byname Foghlaidh meant "pirate, marauder, plunderer".
GuerraItalian, Spanish, Portuguese From a nickname meaning "war", given to a belligerent person or one engaged in warfare.
GuerreroSpanish Means "warrior" in Spanish, an occupational name for a soldier. It is derived from Late Latin werra "war", of Germanic origin.