There's a Peregrine "Perry" in one of my classes and I was surprised by how well it works on a real person. Might be inching its way onto my list too :)
Perry is the nn I'd use if I ever had a son named Peregrine! It was my #1 for a loooong time but I started to get worried it wouldn't work well on a person, so I'm really glad to hear that it works on the one you know!