Question: Who is the maternal grandfather of Maria Of Serbia, Marchioness Of Montferrat?
Sentence (from "Angelina of Serbia"): Angelina Branković (ca. 1440–1520), née Arianiti, was the despotess consort of Serbian Despot Stefan Branković (r. 1458—1459), and a daughter of Albanian nobleman Gjergj Arianiti.
Relevant evidence: Yes