Sabbatai Zevi

The story of Sabbatai Zevi is the story of a kabbalist that was supposed to be the Jewish Mesiah, turned to the muslim faith.

A link about him can be found on Wikipedia.
Sabbatai Zevi
Another information is on Gershom Scholem book about jewish misticism in his eighth conference that I was reading "Las grandes tendencias de la mística judía". Today I have finished that book.

There is an entire book dedicated to that false Mesiah, Sabbatai Zevi by Gershom Scholem.