Quote Originally Posted by Celvantis View Post
Sharing a regnal name is absolutely not a indicator to relation. Pope Innocent III is utterly unrelated to Pope Innocent I.
I think a few centuries separate the lives of Innocent II and Innocent III let alone Innocent I.

When it comes to sovern name heraldy the number is just indicating how many people carried the name. Especially amungst clergy where marriage is traditionally forbidden.