I will refrain from casting abuse on those sources but I would bet they share a certain commonality.
The wonder of the Internet is that you could have found the answer yourself from legitimate sourced references by simply searching the statement: "Hitler was not Jewish"
One example:
http://www.holocaust-history.org/questions/hitler-jewish.shtml
Thanks, I was at work and although I like to quickly check in with FR from time to time I didn't want to get wound up in surfing Hitler all day, then I forgot about it before I got home. Anyway, it's a pretty common misconception so I'm glad you cleared it up for me.