Robert Alexander, born ca 1806 KY, married Sarah Martin, b. 6 Oct 1811 OH, on 18 November 1828 in Sangamon County, Illinois.The 1850 census taken 4 Nov 1850 in Sangamon County, IL listed children: James 20; Sarah 20; Absolom 17; Martha 15; John 13; Almira 11; Charles 9; Sarah 7; Sinai 5; and Elizabeth 3.
Sketchy information indicates that Robert Alexander went to Oregon over the Oregon Trail.Have found daughter Sinai in Oregon but do not know what happened to remaining children. If you have any information on them would appreciate details. All my efforts to locate them have failed.