Gee there were so many that were bastards... But it sounds like a good picture of John. He remains one of the most unpopular kings of England. The reference to Philip's homosexuality (Did he have an affair with Richard Lionheart?) would fit. So would the French invasion (the barons asked Philip's son Prince Louis - later Louis VIII to come to England).

Hopefully someone else will fill in the rest of the details later. This is just speculation for instant gratification.