Shuyin did. The Shuyin in FFX-2 is, as the fayth of Bahamut stated, "just a shadow. The real Shuyin died long ago."

Oh and @PuPu, how do we know that Tidus isn't named Shuyin? We get to name him - but he must have a real name, which is never said. How are we to say that the fayth do not remember Tidus' name - they never did anything to indicate they forgot his name (except for not telling it, which is, however, caused by our ability to name him).