When Sarah Ann Harkless was born on November 11, 1829, in Pennsylvania, her father, George, was 45, and her mother, Sarah, was 42. She had five sons and six daughters with Oliver General Greeno between 1846 and 1878. She died on April 30, 1878, in Nebraska at the age of 48, and was buried at the Admah Cemetery in Washington County, Nebraska.
Sarah's Grandfather was Charles Friedrich Hergloz (1761-1830), who fought for the British as a Hessian mercenary (See the "Links" section for more information) in the US Revolutionary War. He defected and fought for the colonists. He changed his last name to Harkless, probably to protect himself from being hunted down by the British.