Constantine Euphorbenos Katakalon

Constantine Euphorbenos Katakalon (Greek: Κωνσταντῖνος Εὐφορβηνὸς Κατακαλών)[a] was a Byzantine noble and one of the most prominent generals of the reign of Alexios I Komnenos (r. 1081–1118).

A descendant of the noble Katakalon and Euphorbenos families, Constantine is first mentioned in the sources when he commanded the Chomatenoi corps and the Turkish contingent of Alexios Komnenos' army in the Battle of Kalavrye in 1078.

[2][1] He appears again in the lists of the Synod of Blachernae in 1094, bearing the title of protokouropalates, and ranking in the 20th place among those aristocrats and court officials attending.

[5][6] One of his surviving seals mentions him as both doux of Cyprus and kouropalates, rather than nobelissimos; this may imply that Katakalon had already served in this post before, prior to his promotion.

The Byzantine delegation convinced the Norman prince to seek a settlement with the Empire, and accompanied him to the imperial camp at Deabolis, where the namesake treaty was signed.