Finally, Anna Fortunata Brivio (+ 1732) married Pietro Agnesi and was mother of the famous mathematician Maria Gaetana Agnesi.
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The family rose to significant influence in Brianza at the end of the 17th century, when a member of this family, Francesco (+ before 1679), became very rich with silk trading.
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Francesco (1680 + 1732) married Elena Attendolo Bolognini, member of an important noble family from Milan and descendant (by mother, Cecilia Medici di Marignano) from Pope Pius IV and Gian Giacomo Medici.
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In 1713 Giacomo became Lord of Montevecchia, the village of his ancestors, and in 1716 famous composer Antonio Vivaldi dedicated him a dramma per musica, Arsilda, regina di Ponto.
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Founder of the family was Pietro Brivio (in Latin: Petrus Brivius or Petrus de Brippio), who moved at the end of the 15th Century from Milan to Montevecchia, where he had bought many properties.