Olympic Medalists: 1 bronze, 1 gold
(gold) Xenia Stad-de Jong   1948   4x100 m relay  
(bronze) Princess Nathalie of Sayn-Wittgenstein-Berleburg (middle name Xenia)   2008   equestrian  
Other Royalty: 1 grand duchess
Xenia Alexandrovna of Russia   1875-1917   Russia