February 1820: William Catesby Latane and his wife Anne Elizabeth (Burwell) Latane have their first child, at Mahockney, a son: James Henry Latane. In 1820, the Latanes also built a major addition onto the house, which would serve them well in coming years as more children arrived.

James Henry Latane would go on to marry Juliet Janet Rouzee, and lived at Mahockney as an adult when she had their own first child, Janet Roane Latane on May 5, 1843.