  The Pascal family (Étienne, Blaise, and Jacqueline) left Paris again during the civil war known as the Fronde (1648), and they returned later that year to a new address in the French capital. The settlement agreed by Mazarin and the regent with the parlement to end the Fronde meant that Étienne had become redundant as a tax-collector in Rouen. The return to Paris was followed within a few years by a radical change in the emotional and nursing support that Blaise Pascal had enjoyed since his earliest years. His older sister Gilberte had married Florin Périer in June 1641 and had moved to Clermont-Ferrand. However, his younger sister, Jacqueline, who had continued to act as his personal assistant, expressed a desire, in May 1648, to become a nun. She wanted to enter the Port-Royal convent in Paris, which was under the spiritual supervision of Jansenists and in which one of Arnauld's sisters was a prominent Abbess. Étienne's opposition caused Jacqueline to defer implementing her decision as long as he was still alive. However, four months after her father's death in 1651, and despite her brother's opposition, Jacqueline Pascal joined Port-Royal. Then, for the first time in his life, Blaise Pascal was alone and still in poor health. He soon began to accept spiritual guidance from his sister Jacqueline and subsequently from a prominent Jansenist, Antoine Singlin (1607–64).