One thought: There is no mention in the Bible of the death of James (the half-brother of Jesus). However, Acts 12:1+2 relates how James, the son of Zebedee, died by the sword, on the orders of Herod...
The Bible never speaks of James as a half-brother of Jesus, only as his brother. In fact, the gospels talk of the relationship of Mary to James, Jude and their sisters as if they were her own...
Paul, in his Epistle to the Galatians, describes meeting James, "the brother of Jesus" in Jerusalem, where he appeared to be one of the three pillars of the local church (along with Peter and John)...