4. Alexander (Aleksandr Pavlovich) 1777–1825, czar of Russia 1801–25.
5. Alexander (Alexander Obrenovich or Aleksandar Obrenović) 1876–1903, king of Serbia 1889–1903.
6. Alexander 1888–1934, king of Yugoslavia 1921–34 (son of Peter I of Serbia).
7. Alexander Alexander II, (Aleksandr Nikolaevich) 1818–81, czar of Russia 1855–81.
8. Alexander Alexander III,
9. Alexander died 1181, Italian ecclesiastic: pope 1159–81.
10. Alexander (Aleksandr Aleksandrovich) 1845–94, czar of Russia 1881–94.
11. Alexander Alexander VI, (Rodrigo Borgia) 1431?–1503, Italian ecclesiastic: pope 1492–1503 (father of Cesare and Lucrezia Borgia).
Definition of 'Alexander'
Princeton's WordNet
1. (noun)Alexander, Alexanders, black lovage, horse parsley, Smyrnium olusatrum Europeanherb somewhat resembling celery widely naturalized in Britain coastal regions and often cultivated as a potherb
Definitions of Alexander 
