Castillon Family History
Castillon Surname Meaning
Spanish (Castillón): topographic name of Aragonese origin, a cognate of Catalan Castelló and its Castilianized form Castellón (see Castellon) from a diminutive of castel ‘castle’ (see Castell).
French (southern): habitational name from any of various places so named, a cognate of 1 above.
Source: Dictionary of American Family Names 2nd edition, 2022
