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Isabella Agneta Elisabeth van Tuyll van Serooskerken, better known by her pen name Isabelle de Charrière, was a Dutch writer of the 18th century. She was born into a wealthy family and received a good education. She was married to Charles-Emmanuel de Charrière, but the marriage was unhappy and they soon separated. de Charrière spent most of her life living in Switzerland, where she wrote novels, plays, and essays.