Question: What nationality is John Doukas (Sebastokrator)'s father?
Sentence (from "Constantine Angelos"): He was the founder of the Angelos dynasty, which went on to rule the Byzantine Empire in 1185–1204 and found and rule the Despotate of Epirus (1205–1318) and the Empire of Thessalonica (1224–1242/46).
Relevant evidence: No