The House of Diogenes (), feminine form: Diogenissa, plural: Diogenai, was a

Cappadocian Greek Cappadocian Greek (, also known as Cappadocian is a dialect of modern Greek, originally spoken in Cappadocia (modern-day Central Turkey) by the descendants of the Byzantine Greeks of Anatolia. The language originally diverged from Medieval Gree ...

noble family of the

Byzantine The Byzantine Empire, also known as the Eastern Roman Empire, was the continuation of the Roman Empire centred on Constantinople during late antiquity and the Middle Ages. Having survived the events that caused the fall of the Western Roman E ...

military aristocracy that provided several prominent generals and three emperors during the 10th and 11th century.

Romanos IV Diogenes Romanos IV Diogenes (; – ) was Byzantine emperor from 1068 to 1071. Determined to halt the decline of the Byzantine military and to stop Turkish incursions into the empire, he is nevertheless best known for his defeat and capture in 1071 at ...

was, by marriage to

Eudokia Makrembolitissa Eudokia Makrembolitissa () was a Byzantine empress by her successive marriages to Constantine X Doukas and Romanos IV Diogenes. She acted as ruler with her two sons in 1067, and resigned her rule by marriage to Romanos IV Diogenes. When he was ...

, Byzantine Emperor between 1068 and 1071. Romanos led the Byzantine army for the pivotal defeat at the

Battle of Manzikert The Battle of Manzikert or Malazgirt was fought between the Byzantine Empire and the Seljuk Empire on 26 August 1071 near Manzikert, Iberia (theme), Iberia (modern Malazgirt in Muş Province, Turkey). The decisive defeat of the Byzantine army ...

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