The Maury Co. 1820 census lists a John PLOWMAN and a J.PLOWMAN. John PLOWMAN and Jonathan PLOWMAN appear on the 1830 census for Giles Co. John has two daughters. John PLOWMAN appears on the 1840 Giles census. John PLOWMAN and Isabella sold property in Giles Co. in 1841 to J.A. JOHNSTON. Two PLOWMAN daughters may have married into DAVIS or SULLIVAN families in Tennessee before moving to Illinois. Do you have any connection to these families?