Emma Jane Ott (maiden name: Mack) was born around 1842 in Indiana to Ransom and Elizabeth Mack. Her father was a farmer who owned $300 of personal property by 1860. The family lived in West Van Buren, Indiana, until the 1850s, when they moved to Jackson, Indiana. She married Thomas Ott on March 14, 1861, and they had at least three children: Ransom, born around 1863; Fanny, born around 1867; and Effie, born around 1868. They lived in New Paris, Indiana, and her husband worked as a farmer. By 1870, they owned $500 of personal property. She died on April 1, 1875.