No one knows what his father was. Only Mary knows.
I think that Gabriel guy needs to be called in for questioning and a paternity test..He shows up at a 14 year old girls window in the middle of the night like some perverted stalker and tells her that she was chosen by God to conceive and give birth to a Holy child.
I heard that Temple priests used to take on the name of angels, felt a religious duty to pass on their holy genetics, and had a thing for virgins,...... but that's just what I heard.
I suppose if they tried that line on anyone older standing at their window in the middle of the night they would have screamed rape.