Sarah Jane Steele is born in Pennsylvania. She married fur trader Henry Sibley in 1843; when he became the state of Minnesota's first governor in 1858, she became its first First Lady. Before her death in 1869, she advocated for historical preservation, making a particular effort to save and interpret Mount Vernon, the home of George Washington. The Sibleys' own house in Mendota has been called "the Mount Vernon of Minnesota."