Basil Doukas Kamateros
Basil Doukas Kamateros () was a Byzantine aristocrat and senior official. Basil was the son of the official and theologian Andronikos Doukas Kamateros, and brother of Empress Euphrosyne Doukaina Kamatera, wife of Alexios III Angelos (r. 1195–1203). A relative of the imperial family—his grandmother Irene Doukaina was probably a daughter of the "protostrator" Michael Doukas, brother-in-law of Alexios I Komnenos (r. 1081–1118)—he held the high rank of "sebastos", and by 1166 held the office of "protonotarios". By 1182 he had advanced to the post of "logothetes tou dromou", but was dismissed, blinded (apparently only in  one eye), and banished to Russia when Andronikos I Komnenos (r. 1182–1185) took power. He returned to Constantinople and was again "logothetes tou dromou" under Isaac II Angelos (r. 1185–1195), and remained active at court under his brother-in-law Alexios III. After the Fourth Crusade he fled to the Empire of Nicaea, established by his nephew Theodore I Laskaris, who in 1209/10 sent him on an embassy to the King of Armenian Cilicia, Leo I.