Question: Who is Hugh De Courtenay, 1St/9Th Earl Of Devon's paternal grandfather?
Sentence (from "Hugh de Courtenay, 1st/9th Earl of Devon"): This thus made him 1st Earl of Devon, if the letters patent are deemed to have created a new peerage, otherwise 9th Earl of Devon, if it is deemed a restitution of the old dignity of the de Redvers family, and he is deemed to have succeeded the "suo jure" 8th Countess of Devon, his second-cousin once removed.
Relevant evidence: No