Namesakes
Other Royalty:
1 princess, 1 princess/queen consort
Maria of Yugoslavia (a.k.a. Karađorđević) 1900-1922; 1922-1934 Romania; Yugoslavia 
Olga of Greece and Denmark (a.k.a. Karađorđević) 1903-1923; 1923-1976 Denmark; Greece; Yugoslavia