You need to read "The Three Christs of Ypsilanti." Three guys all claimed to be Jesus, so they stuck them together in the same mental ward, hoping that at a minimum, one of them would decide he wasn't Jesus. All three refused to change their mind.
There's a book written about the whole thing. (Now I see the article mentions it.) The book is still available: http://www.amazon.com/Three-Christs-Ypsilanti-Review-Classics/dp/1590173848/ref=sr_1_1?s=books&ie=UTF8&qid=1422929861&sr=1-1&keywords=three+christs+of+ypsilanti