Constantine X Doukas or Ducas, was Byzantine emperor from 1059 to 1067. He was the founder of the Doukid dynasty. During his reign, the Normans took over much of the remaining Byzantine territories in
Contemporary miniature of Constantine X, previously thought to be Alexios I
Constantine X and Eudokia Makrembolitissa in a reliquary of Demetrius of Thessaloniki.
Son of the general Constantine Diogenes and a prominent member of the Cappadocian Greek military aristocracy, Romanos rose to fame as a successful Akritai commander, serving in Syria and on the Danubi
Constantine X Doukas
…to remarry. Both Michael and Konstantios were too young to rule, so Empress Eudokia ruled as the de facto ruler until 1 January 1068, when she married Romanos IV Diogenes and crowned him emperor. By his first wife, a daughter of Constantine Dalassenos, Constantine X Doukas had no issue…
Gold histamenon of Romanos IV: Michael VII Doukas flanked by his brothers Andronikos and Konstantios on the obverse, Romanos IV and Eudokia Makrembolitissa crowned by Christ on the reverse
Copper follis of Romanos IV. The obverse shows Christ Pantokrator, while the reverse depicts a cross quartered with the letters ϹΒΡΔ for the motto Σταυρὲ σου βοήθει Ρωμανόν δεσπότην ("Thy Cross aid the Lord Romanos").
Alp Arslan humiliating Emperor Romanos IV. From a 15th-century illustrated French translation of Boccaccio's De Casibus Virorum Illustrium.