In which John Custis IV and Frances Parke make an attempt to live "peace quietly" together. Part IV of the Martha Washington's in laws series. References: A Marriage Agreement. The Virginia Magazine of History and Biography, Jul., 1896, Vol. 4, No. 1 (Jul., 1896), pp. 64-66. John Custis: https://encyclopediavirginia.org/entries/custis-john-1678-1749/ Custis, John, and Josephine Little Zuppan. The Letterbook of John Custis IV of Williamsburg, 1717-1742 / Edited by Josephine Little Zuppan. Lanham, Md: Rowman & Littlefield, 2005. Brady, Patricia. Martha Washington : an American Life / Patricia Brady. New York: Viking, 2005.