Question: Who is the maternal grandfather of Michael Of Trebizond?
Sentence (from "Eudokia Palaiologina"): Eudokia Palaiologina or  (c. 1265 – 18 September 1302) was the third daughter of Byzantine Emperor Michael VIII Palaiologos and his wife, Theodora, a grandniece of Emperor John III Doukas Vatatzes of Nicaea.
Relevant evidence: Yes