Sandford Ader b. 1852 Mercer Co., Moand married Elizabeth McReynolds b. 1851 Mercer Co., Mo. and son Riley Columbus b. 1873 and married Rebecca Preston b. 1873 Mercer co., Il.Riley died in 1947 and Rebecca died 1959 both in S. D.Would like to find the names of their children.Only have Orlando and he married Grace Edith Preston.Need to find the descendants of this line.Thanks.