Gibson Ishtanubbee and Isham Seeley robbed and killed Funny, a Chickasaw doctor, and his cook, a Black woman named Mason, in 1872. Though they confided in neighbors and friends what they had done, no one betrayed their confidence for several years. Then, after a falling out with Ishtanubbee, Kitsie Cobb told authorities about the killings.
Another man cam forward and offered similar details. On that basis, Ishtanubbee and Seeley were tried in federal court, convicted, and sentenced to death on February 5, 1876. They were hanged at Fort Smith on April 21, 1876.
The Federal Death Penalty Project 