I didnt have any luck find Silas in 1860 but if this helps I found this: 1870 MATLOCK SILAS Crawford County MO 674 Union Township Silas Matlock 28 MW MO Farmer, v.pers $200 Sarah 27 FW MO House Keeper William T. 6 MW MO Eliza A. 3 FW AR James J. 1 MW MO 1880 MEDLOCK SILAS Dent County MO Short Bend 64-6 Silas Medlock Head WM 37 M MO MO TN Farmer Sarah Wife WF 37 M MO KY KY William Son WM 15 S MO MO MO James Son WM 10 S MO MO MO Rebecca Dau WF 7 S MO MO MO Edward Son WM 4 S MO MO MO 1900 MATLOCK SILAS Dent Co MO Spring Creek Twp 82 Silas Matlock Head WM Jan 1842 58 M 39 years MO MO TN Farmer Sarah Wife WF Dec 1842 57 M 6/4 MO KY KY Elisha Son WM July 1875 24 S MO MO MO ****************************************************************************** ***** 1870 MEDLOCK SILAS Shannon County MO 655 Jackson Silas Medlock 27 MW MO Farmer, v.R/E $800, v.pers $400 Siloma 30 FW MO Keeping house Melissa 3 FW MO Edward 2 MW MO 1880 MEDLOCK EDWARD Dent County MO Texas 363D Mallachi Pewitt Head MW 63 M TN SC SC Farmer Catharine Wife FW 47 M SC SC SC Keeping house David Son MW 24 S MO TN SC Works on farm Mary A Dau FW 14 S MO TN SC Asst Housekeeper James H Son MW 12 S MO TN SC Works on farm Lille A Dau FW 10 S MO TN SC John S Son MW 7 S MO TN SC Silas L Son MW 5 S MO TN SC Josaphine I Dau FW 1 S MO TN SC Edward Medlock MW 12 S MO KY MO Calvin MW 9 S MO KY MO