Heck yes, she could!
in reply to a message by TammyS
It's not, like, supremely bizarre, and everybody does know that it's a name. I'd rather be Guinevere than Madison any day! I recently discovered that I had a great aunt Guinevere. Seriously, who knew lol? Though for some reason I slightly prefer Gwenevere. It lends itself to the nn Gwen more easily, which I've loved since elementary school.