Thread:LilyLacreag/@comment-4850222-20130131175721/@comment-4934571-20130131182108

I used this name, because I've seen the statistics and William was very popular name (5th place) in late 19th century. Bill was less popular.

I think that his real name was William, because it was popular and Avonlea was conservative village - noone had strange name. Everyone called him Billy - also, as you said, because of his personality.