During this rehabilitation, Voltaire also formed a new relationship that was to prove profoundly influential in the subsequent decades. He became reacquainted with Emilie Le Tonnier de Breteuil,the daughter of one of his earliest patrons, who married in 1722 to become the Marquise du Châtelet. Emilie du Châtelet was twenty-nine years old in the spring of 1733 when Voltaire began his relationship with her. She was also a uniquely accomplished woman. Du Châtelet’s father, the Baron de Breteuil, hosted a regular gathering of men of letters that included Voltaire, and his daughter, ten years younger than Voltaire, shared in these associations. Her father also ensured that Emilie received an education that was exceptional for girls at the time. She studied Greek and Latin and trained in mathematics, and when Voltaire reconnected with her in 1733 she was a very knowledgeable thinker in her own right even if her own intellectual career, which would include an original treatise in natural philosophy and a complete French translation of Newton’s Principia Mathematica—still the only complete French translation ever published—had not yet begun. Her intellectual talents combined with her vivacious personality drew Voltaire to her, and although Du Châtelet was a titled aristocrat married to an important military officer, the couple was able to form a lasting partnership that did not interfere with Du Châtelet’s marriage. This arrangement proved especially beneficial to Voltaire when scandal forced him to flee Paris and to establish himself permanently at the Du Châtelet family estate at Cirey. From 1734, when this arrangement began, to 1749, when Du Châtelet died during childbirth, Cirey was the home to each along with the site of an intense intellectual collaboration. It was during this period that both Voltaire and Du Châtelet became widely known philosophical figures, and the intellectual history of each before 1749 is most accurately described as the history of the couple’s joint intellectual endeavors.