Is there some hidden stat for ruler mortality?

[Wizzington]

+10% chance per stat point





No, not really. All rulers have the same chance to die, only thing besides age that affects it is being a general and participating in battles/sieges.

 

[Wizzington]

Does simply assigning the ruler to an army(without participating in a battle) increase his chance to die or is it just a myth?

You're right actually, it does slightly increase the chance.

 

[Wizzington]

Yeah I do think that some rulers have some sport of health/mortality stat. It seems like Enrique dies within a couple of years even as a player. Philip seems lasts for decades if not triggered by event most notably if it's player that guy likes to live to his 90s.

They do not.