Question: What is the date of birth of Maria Maddalena De' Medici's mother?
Sentence (from "Ferdinando II de' Medici, Grand Duke of Tuscany"): Rovere, a first cousin, with whom he had two children who reached adulthood: Cosimo III de' Medici, his eventual successor, and Francesco Maria de' Medici, Duke of Rovere and Montefeltro, a cardinal.
Relevant evidence: No