Actually, Freddie got his marriage to Adela annulled by the pope on the basis on consanguinity: his g'g'g-something was a third cousin twice removed on her g'g'g'g'g'g'g-somethingelse's side.

It was really the old story: she wasn't producing any heirs, so he dropped her. She'd provided him with more lands but no kids, so out she goes! Beatrice brought him Burgundy (the Kingdom) and a bunch of other places AND gave him six kids or so.

And this story is just in time for Valentine's Day!