Question: Who is Guy, Margrave Of Tuscany's maternal grandmother?
Sentence (from "Guy, Margrave of Tuscany"): Guy (also "Guido" or "Wido"; raised Leo; called the Philosopher) (died 3 February 929) was the son of Adalbert II of Tuscany with Bertha, daughter of Lothair II of Lotharingia.
Relevant evidence: Yes