Not if Siggy falls in love with Mary; like he did with Barbara. Mary being innocent before marriage is one thing, for all we know, she'll be a horny little wife. If Mary falls in love with him as well, a lot of these concerns are going to be moot. Mary is his first wife, he's her husband and he's going to be king of Poland. She's not going to be another Katherine of Aragon, with a lot of political experience (raised on the campaign against the Moors, like Katherine). Mary's going to fall in love with her husband and be wifey. Until Edward VI dies. And then we're gonna have fun. Henry, having wed off one 'bastard' (no one else but England considered Mary one) daughter, will wed the other off as well. Look for Liz to wed around 1546, with step-mother Parr objecting (but not getting her way) to the husband Henry chooses for her. Will Jane Grey get to keep the throne or will the combination of Mary, Siggy, and HRE succeed?