
Robert Spencer
Robert Bruce Spencer is an American anti-Muslim author and blogger, and one of the key figures of the counter-jihad movement. Spencer founded and has directed the blog Jihad Watch since 2003. In 2010 he co-founded the organization Stop Islamization of America with Pamela Geller.
Excerpt from Wikipedia, available under CC BY-SA 4.0.
Books

Did Muhammad Exist? An Inquiry Into Islam's Obscure Origins
2012
ISBN 9781610170611