Totally off topic, but I was reading about his descendants and if there are any Penns alive today.

The short version is there’s no living descendant named Penn, as the surviving ones are through lineages via women who changed their name for marriage.

But a random bit that I found funny was that he had kids in both the US and the UK (from different wives I believe), but all the descendants from his US kids eventually returned to the UK (one dated Prince William) and all this descendants from his UK kids eventually moved to the US.

https://billypenn.com/2017/09/04/no-youre-not-a-descendant-of-william-penn/