In my current game the Papacy seems to be occupied by pirates. It is led by Pope Marinus a one-eyed strong lunatic while the preferatus owns a parrot, walks with a pegleg and is named Guido the Sea-Devil.
What mod gives peglegs and pet parrots?
The Health and Disease DLC (Reaper's Due iirc) adds healers/doctors, one of the templates is a Piratey Matey Yarr kind of guy. It also adds amputations and, presumably, prosthetics.
Piratey Matey Guy comes with the Parrot modifier himself, but some of the DLC (the latest, iirc) or possibly the free update content makes it possible to get a parrot yourself through random event. You can also since previously have a dog (Way of Life, Hunting focus), a horse (Horselords, if Nomadic government type), or a cat (random event).
They're all good boys, brunt.
It probably isn't very good question but does it usually happens that you ask yourself how I got this claim on this random county
Aside from already mentioned reasons you also get a claim on provinces that leave your realm through, say, revolt. Sometimes this leads to you getting claims on counties that never actually left (because they lost the revolt and rejoined) and other strange things. But yeah, I've been playing this game since it came out and I still sometimes have no idea how my character ended up with a claim.
Is there a way to find a person history because there are some interesting things I want to see.
Yes. Either search for them in the history files, or look for it in the title history (click on a province coat of arms to find it) or through the dynasty history of somebody they are related to (click on a character's house coat of arms to find it).
However the timeline does not go beyond 1 AD for mechanical reasons, the engine wasn't built that way.