I dont know anything about John William Clark.. born Dec 1838 and dying May 3 1864 Newton Co AR.. The William C Im looking at is this one: JOHN WILLIAM CLARK MATLOCK, b. December 1838, Franklin County, Alabama; d. 03 May 1864, Richland Creek, Newton County, Arkansas; m. MARY CAROLINE MAYLAND, 1861. In 1860 Newton Co I show this John: 1860 MATLOCK JOHN Newton County AR 1026 Boston Mountain John Matlock 24 WM Farmer KY Pernica 22 WF AR Federick 1 WM AR but this is the William Im looking at: 1870 MATLOCK WILLIAM Independence Co AR 177 White River William Matlock 33 MW Farm Labor AL Mary 24 FW AR Kelley 3 MW AR Sarah 1 FW AR 1880 MATLOCK WILLIAM Independence Co AR Christian 266 William Matlock Head WM 37 AL TN TN Farmer Eliza Wife WF 30 MS TN AL Kellie Son WM 10 AR AL MS Sarah Dau WF 8 AR AL MS William Son WM 6 AR AL MS Mary Dau WF 5 AR AL MS Ella Dau WF 6/12 AR AL MS Its unknown When and where William died.. But by 1900 the son Kelly is in Denton Co TX...