He is the brother of James the Less.
Mark 15:40There were also women looking on from a distance, among whom were Mary Magdalene, and Mary) the mother of James the Less and Joses, and Salome.
Mark 15:47Mary Magdalene and Mary) the mother of Joses saw where he was laid.
He was also called Joseph.
Matthew 27:56Among them were Mary Magdalene, and Mary) the mother of James and Joseph), and the mother of Zebedee's sons.