Question: Who is Auguste-Louis-Albéric, Prince D'Arenberg's paternal grandfather?
Sentence (from "Auguste-Louis-Albéric, prince d'Arenberg"): Third son of Pierre d'Alcantara Charles Marie, duc d'Arenberg and Alix de Talleyrand-Périgord, he inherited his father's title because of his older brothers' premature deaths.
Relevant evidence: Yes