ιακωβον τον αδελφον του κυριου from the Textus Receptus, Scriveners)
Jacob (=James) the brother of The Lord.
From the Greek, "brothet" and "Lord" are both articulate, which makes these words very specific regarding the syntax. No doubt here. James (Jacob) is the womb-brother of Jesus. Very plain. No nuances. No wiggle room on this. Unless Paul is a fibber, that is. /sarc
No doubt ?
Who believed as you and taught that Mary was not ever Virgin ? When did that teaching start ?