David S. Reynolds, John Brown, Abolitionist: The Man Who Killed Slavery, Sparked the Civil War, and Seeded Civil Rights, rev. ed. (New York: Vintage Books, 2005), 49.
[John] Brown…took on a housekeeper whose sixteen-year-old sister, Mary Day, came occasionally to spin cloth. Mary caught his eye as she sat at her spinning wheel. Tall and deep bosomed, she had striking black hair and a sturdy frame. The daughter of Charles Day, a blacksmith and farmer in nearby Troy Township, she had little formal education but impressed Brown as a practical, hardworking woman. It wasn't long before Brown, too bashful to propose verbally, presented her with a written offer of marriage. The girl nervously put his note under her pillow and slept on it a night before opening it. After reading it, she grabbed a bucket and rushed off to a spring to fetch water. Brown followed her. By the time the two returned to the house, he had received the answer he wanted. They were married on June 14, 1833. Ten months later a baby girl, Sarah, arrived.