From the French surname, used as a given name among Nonconformists in honour of the French Protestant theologian Jean Calvin (1509–64). The surname meant originally ‘little bald one’, from a diminutive of calve, a Norman and Picard form of French chauve ‘bald’. (The theologian was born in Noyon, Picardy.) Today the name possibly owes its popularity as much to the New York fashion designer Calvin Klein as to the theologian.
English, Scottish, and French: status name for a young servant, Middle English and Old French page (from Italian paggio, ultimately from Greek paidion, diminutive of pais ‘boy’, ‘child’). The surname is also common in Ireland (especially Ulster and eastern Galway), having been established there since the 16th century.