I picked Ned. I like Wilbur, BUT I think it would get shortened to Wil and there are already about six thousand of them in each primary school.
I know a 2 year old Edward who gets called Ned. Maybe you could do the same thing with Edmund?

Hey, Twin Sis, my old car was Mabel and my new bike is Ramona (only after DH swore we would never use it as a baby name. Bike name is second best, but I'll take what I can get)