Question: Who is the maternal grandfather of Princess Maria Bona Of Savoy-Genoa?
Sentence (from "Princess Maria Bona of Savoy-Genoa"): (Maria Bona Margherita Albertina Vittoria; 1 August 1896 – 2 February 1971), was a daughter of Prince Thomas, Duke of Genoa and Princess Isabella of Bavaria.
Relevant evidence: Yes