Medici, Cosimo III de'

Medici, Cosimo III de',

1642–1723, grand duke of Tuscany (1670–1723); son and successor of Ferdinand II de' MediciMedici, Ferdinand II de',
1610–70, grand duke of Tuscany (1620–70); son and successor of Cosimo II de' Medici. A pupil of Galileo, he founded (1657) the Accademia del Cimento, the first European academy of natural sciences.
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. During his long reign the government of Tuscany degenerated into bigoted and corrupt despotism. His son and successor, Gian Gastone de' MediciMedici, Gian Gastone de'
, 1671–1737, grand duke of Tuscany (1723–37); son and successor of Cosimo III de' Medici. Gian Gastone was the last male member of his family, and the question of succession caused agitation from 1715 onward.
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, was the last of the family to rule Tuscany.
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