Washington termed "white ink"; the second liquid was used to make the secret writing visible. Later life By the end of 1784, Sir James had returned to America where he resumed the practice of medicine and attended William Livingston (the first Governor of New Jersey and father of Sarah Livingston Jay, his brother John's wife) in his final illness. In 1800, he ran for New Jersey Assembly, but lost. He petitioned Congress for repayment of a loan he made during the Revolutionary War, but failed in that as well. In 1813, Sir James presented a "Narrative" to Congress which insisted that in Europe he worked to implement plans to attack British commerce and ports. Personal life In 1785, after Jay returned to New York, he was married to Anne Erwin (1750–1840) and they lived in Springfield, New Jersey (although some sources claim they never married). Together, they were the parents of two children, including Mary (née Jay) Okill (1785–1859), a "vivacious woman" who became a "headmistress of one of the most highly regarded female academies in New York City." She married merchant and broker John Okill, and was mother of Mary Helena Okill (1815–1893) (who married Dennis Hart Mahan, a military theorist, civil engineer and professor at the United States Military Academy at West Point; they were the parents of naval historian and theorist Rear Admiral Alfred Thayer Mahan). Sir Jay died in 1815. He was buried in Jay Cemetery in Rye. References External links 1732 births 1815 deaths Van Cortlandt family John Jay People of the Province of New York 18th-century American physicians Huguenot participants in the American Revolution Loyalists in the American Revolution from New York (state) Physicians from New York City Politicians from New York City New York (state) state senators Gout researchers Jay family