"Mattias de´ Medici (9 May 1613 – 11 October 1667) was the third son of Grand Duke Cosimo II de´ Medici of Tuscany and Archduchess Maria ...
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Maddalena of Austria. He was governor of Siena, with interruptions, from 1629. He never married." - (Wikipedia (en) 13.12.2020)
