Findings:
- Pietro Angelo Secchi
- Pietro d'Apone
- Pietro Bembo
- Pietro Mascagni
- pietro (user)
- Pietro Belluschi
- Pietro Aretino
- Pietro Tullio
- Pietro Antonio Cataldi
- Pietro Aldobrandini
- Pietro Lorenzini (user)
- Pietro Lombardo
If you Log in you could create a "Pietro Urbani" node. If you don't already have an account, you can register here.