Really, do you think so? You make a strong argument but my own opinion is that Catherine would have rejected any pope who told her that her marriage with Henry was illegitimate. I think she was an incredibly strong woman, who in the end would not have been intimidated by any patriarchal authority, be it Henry or Charles V or even the pope. IMO Catherine felt to her very bones, first and foremost, that she was a Spanish princess, the daughter of Isabella, always and forever superior to the upstart Tudors, and England be d**ned. But that is just my personal reading of her character, and I could very well be wrong. These sixteenth-century personages are 500 years away from us, so very, very distant in time: how can we ever hope to plumb their motives, ultimately?