Xavier, St. Francis...a loyal disciple and follower of Ignatius Loyola, said to have healed the sick, spoken in tongues, raised the dead and was something of a prophet as well.
Xiaoping, Deng...Chinese revolutionary and reformer.
Xenocrates...Greek philosopher, successor to Speusippus as head of The Greek Academy founded by Plato, also a student of Plato.
Xerxes...King of Persia from 485 to 465 B.C.
William Butler Yeats --- Irish poet & dramatist
Brigham Young --- Mormon leader
Vincent Youmans --- American composer
Jack Yellen --- American lyricist
Miruts Yifter ---Ethiopian distance runner
Zardoz...oh wait, this isn't bad Connery films
Zurbaran, Francisco...Spanish painter of Saints and churchpersons.
Zapata, Emilano...radical revolutionary leader of Mexico, committed to social justice.
Next up....(well someone else choose since I gave this category)
Sturgis could I suggest American or Russian astronauts in alphabetical order, commencing with:
Jeffrey S. Ashby. USA
Chaffee, Roger B. (from my home town.)
Vladimir Dzhanibekov--Russia
Dr. Anthony Wayne England
Virgil Ivan "Gus" Grissom--USA
Rick Douglas Husband -- USA
Jervis, Greg
Jemison, Mae
Kadenyuk, Leonid -- Russia
Kovalyonok, Vladimir -- Russia
Kubasov, Valeri -- Russia
Leonov, Aleksei
Lind, Don
Malenchenko, Yuri --- Russia
Malyshev, Yuri --- Russia
Manarov, Musa --- Russia
Ellison Onizuka (Challenger disaster)
Wubbo Ockels, first Dutchman in space
Gregory Olsen, 3rd "space tourist"
Bryan D. O'Connor (Colonel, USMC, Ret.), a former NASA Astronaut.
Valeri Polyakov - Single longest spaceflight - 437-days
Tuân Pham, first Vietnamese in space
Dumitru Prunariu, first Romanian in space
Major Gary E. Payton - American aviator and astronaut.