I read part of the book Holy Blood, Holy Grail and was not too impressed........the authors insist that Jesus must have been married because it was the duty of every Jew to marry and produce children. While this may be true, IF Jesus was the Messiah, then I don't think those rules would necessarily apply to him.
They also take the stand that when Jesus turned the water into wine it was at his own wedding since he was obviously very prominent. However, it could just as easily have been the wedding of one of his younger brothers or sisters, where he would have been very prominent as well, so that's no proof.
If Jesus was the Messiah and IF you take the bible as the Word of God, then I think there would have been SOMETHING written in it to suggest that he was married, had children and never died according to HBHG.