I understand that Edward Seymour's first marriage to Catherine Fillol was annulled because she had an affair with Edward's father. Was this (adultery/incest) an actual grounds for an annulment? I know there has been previous discussion on this blog about grounds for an annulment, but this was not given as one of the reasons. Also I have heard before that Catherine Fillol entered a nunnery after her marriage was annulled. Is this true? If so, was it absolutely necessary for her to do this or just a "good idea" for a woman who has had her marriage annulled to do so?
[Related threads linked below]