Boris Kalamanos

Boris
Born	c. 1114 Kievan Rus'
Died	c. 1153 or 1154
Spouse	Anna Doukaina (uncertain)
Issue	Konstantinos Stephanos (uncertain)
Mother	Euphemia of Kiev
Religion	Eastern Orthodoxy
Occupation	Claimant to the Hungarian throne

Boris (Hungarian: Borisz; c. 1114 – c. 1154), also known as Boris Kalamanos (Greek: Βορίσης Καλαμάνος, Russian: Борис Коломанович) was a claimant to the Hungarian throne in the middle of the 12th century. He was the son of Euphemia of Kiev, the second wife of Coloman the Learned, King of Hungary. After Euphemia was caught in adultery, Coloman expelled her from Hungary and never acknowledged that he was Boris's father. However, Boris, who was born in the Kievan Rus', regarded himself as the king's lawful son. He laid claim to Hungary after Coloman's firstborn and successor, Stephen II of Hungary, died in 1131. Boris made several attempts to assert his claims against Kings Béla II and Géza II with the assistance of Poland, the Holy Roman Empire and the Byzantine Empire, but failed and was killed in a battle.

Boris was the son of Euphemia of Kiev, a daughter of Vladimir II Monomakh, the future Grand Prince of Kiev. She was given in marriage to King Coloman of Hungary in 1112. However, as the Illuminated Chronicle narrated, she "was taken in the sin of adultery". After discovering her illicit relationship, King Coloman expelled his wife from Hungary. She fled to her homeland where she gave birth to Boris around 1114. He was named after St. Boris, one of the first canonized princes of the Rurik dynasty. King Coloman never acknowledged that Boris was his son. Boris grew up in the court of his grandfather, Vladimir Monomakh, in Kiev.

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