Question: Who is Marie Of Orléans, Viscountess Of Narbonne's paternal grandfather?
Sentence (from "Charles, Duke of Orléans"): Charles of Orléans (24 November 1394 – 5 January 1465) was Duke of Orléans from 1407, following the murder of his father, Louis I, Duke of Orléans, on the orders of John the Fearless, Duke of Burgundy.
Relevant evidence: Yes