Pope Shenouda III
Mary the mother of James and Joses was with Mary Magdalene at the cross of Christ (Matt.27: 55,56). They were the same two persons present at the Lord's burial and saw where He was laid, and it was they who brought spices to anoint His body when the Sabbath was over (Mark.16: 1). They were the same persons of whom St. John said in his Gospel: "Now there stood by the cross of Jesus His mother, and His mother's sister, Mary the wife of Clopas, and Mary Magdalene" (John.19: 25).
Therefore, the brothers of Jesus are His cousins, the sons of Mary, the Virgin's sister, the wife of Clopas or Halpha and mother of James, Joses and the rest of the brothers.