There are countless [English] girls’ names that are nouns - Daisy, Rose, Hope, Charity, April, Autumn…
But I can only think of a handful of boys’ names that are nouns, and some of them are kind-of stretching. Here’s what I’ve got:
Frank
Victor
Clay
Tom
Drake
Dick/Peter (really a stretch)
Buck
Beau (also a stretch)
What are some others?
Well, nowadays, there are plenty, as we seem to have gone quite insane; a few:
Sawyer
Cooper
Hunter
Track
I expect that at some point we’ll see:
Wheelright
Wagonmaker
Roadway
etc.
Rod
Bill
Nick
Philbert
A person’s name is always a noun.
Chance
Chase
Cash
Forest
Grant
Peter is a noun, but not the one you are thinking of. It is Greek and Latin for “rock”. Craig also means Rock, but is Celtic.
There is a little bit of punning in the Bible when Jesus gives Simon, son of John, the nickname “Peter”, which ends up becoming his primary name for the rest of the story. In a way, it wouldn’t be wrong to call him Simon “The Rock” Johnson.
Mason
Lance
Guy (as in wire)
Chuck (for a drill)
Hank (of hair)
John (toilet)
Chandler
Ford
Ronin
Warren
Parker
Tanner
Taylor
Tyler
Walker
Matt. As in, “What do you call a man with no arms and no legs who lies down in front of the door?”
Why, that’s a joke, Ah say, a joke, Son!
Garrett
Dean
Deacon
Trip, as in the nickname for “Someone someone the third.”
My friend wants to be called Matthew because 1) he’s British but doesn’t know it, and 2) he doesn’t want to be called something that you wipe your feet on.
So today, when he closed his front door, I informed him he’d gotten his Matthew caught under the door. 
Mark
Chuck
Frank’s a nickname from an adjective, actually. Its original meaning is “Frenchie”.
It’s also a type of sausage - short for “Frankfurter,” or “hot dog” in the US.
Yeah but it’s like Peter… the original meaning is what it is, regardless of any coincidences with any other words.