James, brother of Jesus James the Just, or a variation of James, brother of the Lord ( Latin: Iacobus from Hebrew: יעקב, Ya’akov and Greek: Ἰάκωβος, Iákōbos, can also be Anglicized as “Jacob”), was “a brother of Jesus “, according to the New Testament. He was an early leader of the Jerusalem Church of the Apostolic Age.

https://en.wikipedia.org/wiki/James,_brother_of_Jesus