When Nancy Baxter was born in 1792, in Frederick, Frederick, Maryland, United States, her father, Benjamin T. Baxter, was 39 and her mother, Mary Durbin, was 37. She married John S. Lemaster in 1811, in Ohio, United States. They were the parents of at least 6 sons and 4 daughters. She died on 19 January 1864, in Root Township, Adams, Indiana, United States, at the age of 72, and was buried in Adams, Indiana, United States.