Castor Family History
Castor Name Meaning
French German Spanish and West Indian (mainly Haiti): from the Latin personal name Castor borne by one of the Greco-Roman mythological Dioscuri twins (the other being Pollux) and by several early Christian saints (see Kastor ). English (Nottinghamshire): habitational name from any of the places called Caistor in Lincolnshire Caister in Norfolk or Castor in Northamptonshire all named with Old English cæster ‘Roman fort or town’. German: humanistic surname a translation into Latin of Biber from castor ‘beaver’. Americanized form of German Kaster .
Source: Dictionary of American Family Names 2nd edition, 2022