Question: Who is Reginald De Dunstanville, 1St Earl Of Cornwall's paternal grandfather?
Sentence (from "Reginald de Dunstanville, 1st Earl of Cornwall"): , French: Renaud de Donstanville or de Dénestanville) was an Anglo-Norman nobleman and an illegitimate son of King Henry I (1100–1135).
Relevant evidence: Yes