LOL! I could not help but to make a play on my name. :D
I was a little thrown off by that census myself at first because George's father was listed as John. In 1920 and in previous census records, (also in New Brunswick), he is listed as J. Wilbur. The WWI Draft Index lists him as J. Wilbur too, but the WWII Index lists his full name- Jeremiah Wilbur.
I'm not certain if George had any siblings. I tend to think he was an only child. Jeremiah died in 1966, Anna in 1974. I'll see if I can find any obits. It might take a couple of days.