I downloaded (from Channel 4 OnDemand) and watched this excellent documentary on the 12 Disciples. I was raised a Roman Catholic and so was taught that James 'The Bother of Jesus' was not in fact Jesus' bother (after all, Mary remained a virgin forever) but was instead a half brother or adopted or something - I can't quite remember. Anyway, according to this documentary Jesus had four brothers and two sisters! This was news to me and there was lots more along those lines like Paul had a female disciple! They definitely left out that one!
The history of the early Christian church is endlessly fascinating and this program is well worth watching. Part 1 is here and the rest are on youtube