Sarah Knox "Knoxie" Taylor Davis (March 6, 1814 – September 15, 1835) was the daughter of Zachary Taylor, who was a career military officer during his life and later became President of the United States. She met Jefferson Davis when living with her father and family at Fort Crawford during the Black Hawk War. They married in 1835 and she died three months later of malaria.
Margaret Mackall (Smith) and Zachary Taylor had three surviving daughters and one son. Sarah Knox Taylor was their second child and spent some years growing up on military installations. Her father became a general and commanded forts; her mother provided most of her education. Sarah was given the nickname "Knoxie," which originated from her middle name and from Fort Knox II in Vincennes, Indiana, where she was born. In the early 1830s, her father commanded Fort Crawford at Prairie du Chien, Wisconsin, and was involved in waging the Black Hawk War. His wife and children were living there with him.
At age 17, Sarah fell in love with Jefferson Davis, a recent graduate of the United States Military Academy and a lieutenant, who was second to General Taylor at the fort. Davis was transferred to St. Louis in 1833, yet managed to keep in contact with the woman whom he wished to marry. Taylor admired Davis for his soldiering skills but opposed the romantic match. The Taylors' older daughter had already married Army surgeon Robert Crooke Wood, and they were raising three young children in a desolate frontier outpost. Together with their own experience, the Taylors felt that the military life was too hard and did not want Sarah to be an Army wife
