Pious or pure; possibly a variant of Caston
Castin is a rare surname-turned-given name. It likely derives from the French 'Saint-Cast', or may be a variant of the English surname Caston, referring to a town in Norfolk. In some contexts, it is associated with the Latin 'castus', meaning pure or chaste.
Less common today
Castin isn't in the latest US Top 1000. It last peaked at #5,268 in 2017.
US births per 5-year period, 1990–present (SSA data).
French military officer and colonial administrator in Acadia
