Thanks for your interest, Rollan. I've never come across the suggestion that Philip has Sagittarius rising before. I can understand your feeling that it could fit him, but as the only posited Ascendants for him with some kind of written evidence for them that I've ever seen are Leo and Capricorn, I'm going to continue to go with Leo. To me, the fact that his mother and two of his sons indubitably do have Leo rising, makes it probable that, between Leo and Capricorn, he does, too - this on top of the fact, of course, that it was his father who gave the time that produced Leo rising (see the AstroDatabank source notes for details).
Thank you for your suggestion to move this topic to the Famous People section; I will do so.
Pam