Wikipedia, Jan. 13, 2009 (Standing Bear (1834(?) - 1908); Ponca Native American chief who successfully argued in U.S. District Court in 1879 that Native Americans are "persons within the meaning of the law" and have the right of habeas corpus
Sneve, Virginia Driving Hawk. Standing Bear of the Ponca, 2013: subj. (Standing Bear) p. 40 (1829 Standing Bear is born)
National Park Service website, Apr. 15, 2016 (Standing Bear was born around 1829 in the traditional Ponca homeland near the confluence of the Niobrara and Missouri rivers)