Well, there is a person who is famous from Iowa with a LAST name that starts with X, but I'm not going to tell you! You do the work, sweetheart.
X Article
Imperial Forums
xyaler
Xenops
xora
some thing you can find in Europe that starts with x a xylophone
xingu river
there are absoulutly none- sorry
xnic
There are a number of them, but the most famous is Xi'an.
Malcolm X