Question: Who is Demetrios Palaiologos (Son Of Andronikos Ii)'s maternal grandfather?
Sentence (from "Irene of Montferrat"): It was later proven that the Italian Montferrat had no living male heirs of the Aleramici dynasty, and Eirene's sons were entitled to inherit it upon the 1305 death of Eirene's brother John I, Marquess of Montferrat.
Relevant evidence: No