Question: Which country Gian Gastone De' Medici, Grand Duke Of Tuscany's mother is from?
Sentence (from "Gian Gastone de' Medici, Grand Duke of Tuscany"): However, Spain, Great Britain, Austria and the Dutch Republic disregarded Cosimo's plan and appointed Charles of Spain—whose mother, Elisabeth Farnese, was a great-granddaughter of Margherita de' Medici—Gian Gastone's heir.
Relevant evidence: No