Question: Who is the maternal grandmother of Mattias De' Medici?
Sentence (from "Nannina de' Medici"): Nannina de' Medici( 14 February 1448 – 14 May 1493), born Lucrezia de' Medici, was the second daughter of Piero di Cosimo de' Medici and Lucrezia Tornabuoni.
Relevant evidence: No