Question: Who is Gothelo I, Duke Of Lorraine's maternal grandfather?
Sentence (from "Gothelo I, Duke of Lorraine"): When the House of Bar, which ruled in Upper Lorraine, became extinct in 1033, with the death of his cousin Frederick III, Conrad made him duke of both duchies, so that he could assist in the defence of the territory against Odo II, count of Blois, Meaux, Chartres, and Troyes (the later Champagne).
Relevant evidence: No