 Lehmann became the adoptive son of [[Quanah Parker]].On August 26, 1901, Quanah Parker provided a legal [[affidavit]] verifying Lehman's life as his adopted son 1877–1878.On May 29, 1908, the [[United States Congress]] authorized the [[United States Secretary of the Interior]] to allot Lehmann, as an adopted member of the Comanche nation, 160 acres of Oklahoma land, near [[Grandfield, Oklahoma|Grandfield]].