He insisted that this territory should not be used as colonial territory by any of the thirteen states, but that it should be divided into sections that could become states. He plotted borders for nine new states in their initial stages and wrote an ordinance banning slavery in all the nation's territories. Congress made extensive revisions, and rejected the ban on slavery. The provisions banning slavery, known as the "Jefferson Proviso," were modified and implemented three years later in the Northwest Ordinance of 1787 and became the law for the entire Northwest. Minister to France On May 7, 1784, Jefferson was appointed by the Congress of the Confederation to join Benjamin Franklin and John Adams in Paris as Minister Plenipotentiary for Negotiating Treaties of Amity and Commerce with Great Britain and other countries. With his young daughter Patsy and two servants, he departed in July 1784, arriving in Paris the next month. Jefferson had Patsy educated at the Pentemont Abbey. Less than a year later he was assigned the additional duty of succeeding Franklin as Minister to France. French foreign minister Count de Vergennes commented, "You replace Monsieur Franklin, I hear." Jefferson replied, "I succeed. No man can replace him." During his five years in Paris, Jefferson played a leading role in shaping U.S. foreign policy. In 1786, he met and fell in love with Maria Cosway, an accomplished—and married—Italian-English musician of 27. They saw each other frequently over a period of six weeks. She returned to Great Britain, but they maintained a lifelong correspondence. During the summer of 1786, Jefferson arrived in London to meet with John Adams, the United States Ambassador to Britain. Adams had official access to George III and arranged a meeting between Jefferson and the king. Jefferson later described the king's reception of the men as "ungracious." According to Adams's grandson, George III turned his back on both Adams and Jefferson in a jesture of public insult. Jefferson returned to France in August. Jefferson sent for his youngest surviving child, nine-year-old Polly, in June 1787, who was accompanied on her voyage by a young slave from Monticello, Sally Hemings. He had taken her older brother James Hemings to Paris as part of his domestic staff and had him trained in French cuisine. According to Sally's son, Madison Hemings, the 16-year-old Sally and Jefferson began a sexual relationship in Paris, where she became pregnant. The son