Olga of kiev: Did you mean...?

Ogedei Khan (aka Ogodei) ruled the Mongol Empire from 1229 to 1241. He was the third son of Genghis Khan (r. 1206-1227), the empire's founder. Ogedei's accomplishments included creating a new capital at Karakorum, establishing a system of...

Matilda of Canossa (c. 1046-1115), the Countess of Tuscany (r. 1055-1115) and Vice-Queen of Italy (r. 1111-1115), was the final head of the noble House of Canossa following the deaths of her father in 1052 and her elder brother in 1055. One...

Leo VI was emperor of the Byzantine empire from 886-912 CE. He was the second emperor of the Macedonian dynasty and is sometimes known as “Leo the Wise” in reference to his prolific literary output which ranged from orations to law codes...

Birka, located on the island of Björkö in present-day Sweden, was an important trading center and strongly fortified town in the Viking Age which flourished from the 8th through the 10th centuries CE. Along with the town of Hedeby which is...

Romanos I Lekapenos (“the Ignorant”) was emperor of the Byzantine Empire from 920 to 944 CE. Of Armenian descent, he was a military commander who usurped the throne to rule as co-emperor with the rightful heir, but still minor, Constantine...

John I Tzimiskes was Byzantine emperor from 969 to 976 CE. Although he took the throne by murdering his predecessor Nikephoros II Phokas, John was a popular emperor. A skilled general and a competent politician, he is known for expanding...

Theophilos was emperor of the Byzantine Empire from 829 to 842 CE. He was the second ruler of the Amorion dynasty founded by his father Michael II. Popular during his reign and responsible for a lavish rebuilding of Constantinople's palaces...

The city of Mystras (or Mistras) in southern Greece was the provincial capital of the Byzantine Despotate of the Morea from the 13th through the 15th centuries CE. It was founded in 1249 CE by William II of Villehardouin, and it served as...

The city of Constantinople (modern Istanbul) was founded by Roman emperor Constantine I in 324 CE and it acted as the capital of the Eastern Roman Empire, or Byzantine Empire as it has later become known, for well over 1,000 years. Although...

Peter I of Russia (Peter the Great, l. 1672-1725) was the Tsar of Russia from 1682 to 1721 and the Emperor of Russia from 1721-1725. The lasting impression of Peter's long reign is the significant changes he brought to Russia due to his various...