Florin Périer

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Florin Périer (* 1605 ; † February 23, 1672 at Bien Assis Castle near Clermont-Ferrand ) was Blaise Pascal's brother-in-law and a lawyer in Clermont-Ferrand.

Périer, whose father was a civil servant in the city of Clermont-Ferrand, was a lawyer and attorney (Conseiller) at the Supreme Tax Court (Cours des Aides) in Clermont-Ferrand , where Blaise Pascal's father was Étienne Pascal Richter, and married on June 13th 1641 in Rouen, Pascal's older sister Gilberte (1620–1687), who was also his cousin.

In September 1648 he carried out experiments on air pressure and its change with altitude with a barometer according to the instructions of Pascal's letter on the Puy de Dôme (see Emptiness in Emptiness ).

Pascal was closely connected to the family and visited them several times in Clermont-Ferrand (so in 1649, 1650, 1652, 1653, 1660). In 1652 Florin Périer bought the castle and the associated Bien-Assis property for 32,000 livre from Antoine Malet, Seigneur de Vandègre. Gilberte was Pascal's administrator and, with her husband Florin, published Pascal's Pensées in 1670.

He was the father of Marguerite Périer . He also had five other children with Gilberte (Étienne, Blaise, Marie, Louise, Jacqueline). Like his wife, he was later a Jansenist .

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