Question: Who is Michael Palaiologos (Son Of Andronikos Iii)'s paternal grandfather?
Sentence (from "Michael Palaiologos (son of Andronikos III)"): In 1351/52, when his elder brother, Emperor John V Palaiologos (r. 1341–1391), was engaged in a struggle for the throne with Matthew Kantakouzenos, John V, who sought aid from the Serbian Emperor Stephen Dushan (r. 1331–1355), sent him as a hostage to the Serbian court.
Relevant evidence: No