Alexander I may refer to: Alexander I of Macedon, king of Macedon from 495 to 454 BC. Alexander I of Epirus (370–331 BC), king of Epirus. Alexander I Theopator Euergetes, surnamed Balas, ruler of the Seleucid Empire 150-145 BC. Pope Alexander I (died 115), early bishop of Rome. Pope Alexander I of Alexandria (died 320s), patriarch of Alexandria. Alexander I of Scotland (c. 1078 – 1124), king of Scotland. Aleksandr Mikhailovich of Tver (1301–1339), prince of Tver as Alexander I. Alexander I of Georgia (1386–?), king of Georgia. Alexander I of Moldavia (died 1432), prince of Moldavia.
https://en.wikipedia.org/wiki/Alexander_I