Alphaeus in Smiths Bible Dictionary

(changing) the father of the apostle James the Less, Mt 10:3; Mr 3:18; Lu 6:15; Ac 1:13 and husband of Mary. Joh 19:25 [MARY] In this latter place he is called Clopas (not, as in the Authorized Version, Cleophas).

Link: https://bible-history.com/smiths/A/Alphaeus/