Question: Who is Demetrios Palaiologos (Son Of Andronikos Ii)'s maternal grandfather?
Sentence (from "Demetrios Palaiologos (son of Andronikos II)"): 1304, he was sent to the court of the Serbian ruler Stephen Uroš II Milutin, intended to become his successor; his stay there was short, however, and he soon returned to Constantinople.
Relevant evidence: No