Δούκας

• Δουκᾶς (Doukâs)

Probably a cognominal use of the military rank δούξ (doúx), from Latin dux.

Δούκᾱς • (Doúkās) m (genitive Δούκᾱ, feminine Δούκαινᾰ); first declension

1. (Byzantine) a male surname
   1. Οἶκος τῶν Δουκῶν (9th–11th centuries), Byzantine Greek noble family whose branches provided several notable generals and rulers to the Byzantine Empire
      1. Ἰωάννης Δούκας (fl. 1155–1181), senior military commander and diplomat, sebastos and megas hetaireiarches under Byzantine Emperor Manuel I Comnenus (r. 1143–1180)
         • p. 1179, Eustathius Thessalonicensis, Commentarium in Dionysii periegetae Orbis descriptionem epistle dedicatory.67.1–5:

           Πρὸς τὸν πανσέβαστον Δουκᾶν κύριον Ἰωάννην, τὸν υἱὸν τοῦ πανσεβάστου σεβαστοῦ, καὶ μεγάλου δρουγγαρίου, κυρίου Ἀνδρονίκου τοῦ Καμάτορος, Εὐσταθίου διακόνου ἐπὶ τῶν δεήσεων καὶ μαΐστωρος τῶν ῥητόρων, ἐπιστολὴ ἐπὶ ταῖς Διονυσίου τοῦ περιηγητοῦ παρεκβολαῖς.

           Pròs tòn pansébaston Doukân kúrion Iōánnēn, tòn huiòn toû pansebástou sebastoû, kaì megálou droungaríou, kuríou Androníkou toû Kamátoros, Eustathíou diakónou epì tôn deḗseōn kaì maḯstōros tôn rhētórōn, epistolḕ epì taîs Dionusíou toû periēgētoû parekbolaîs.

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• Greek: Δούκας (Doúkas)