Already got overwhelmed by the Castillans, Aragonese and Portuguese
I'm trying my luck with Cyprus now which is where I was born! Got loads of royal marriages... any way I can inherit a throne without claiming it? France, Castille, Aragon, Portugal and Naples sound mighty appealing for itsy bitsy Cyprus
I usually use stronger countries and only succeeded twice in a personal union (inherited Lithuania as Russia and inherited Denmark as England), all other times I just used the cassus belli and took them over.