John, My line connects with yours at the FOURTH GEN. Charles & Elizabeth had a daughter Mary (1828-1855), 1st wife of William McHargue. She is buried in the Duncan Cem., Wayne Co. IA. Family legend says she was the 9th of 11 children. Do you have the names and dates of the others?
According to the Mercer Co. MO Cemetery book, Charles is buried at the Goshen Cemetery (Jan. 29, 1780-Mar.16, 1873). His wife, Elizabeth, is not listed (perhaps something happened to her stone). Also listed there is Robert W. (April 22, 1809-June 25, 1879)and his wife Caroline (Jan. 27, 1815-Nov. 7, 1881).
Same Mercer Co., MO book lists in the South Lineville Cemetery--Talbot (Mar.2. 1821-Oct. 23, 1908)& wife, Louisa M. (Oct. 29-1829-Apr. 16, 1880). This cemetery is located on the MO-IA state line with graves in both states.