(1914-)
+---Robert Sidney Hammac (1939-)
| | +---William Boutwell
| | +---John Hartley Boutwell (1875-1960)
| | | +---Matilda Colvin 
| +---Mary Vermell Boutwell (1918-)
| | +---Andrew Druett Manning (1811-)
| | +---Barney Austin Manning
| | | +---Nancy Ree Knowles (1829-1853)
| +---Martha Drucella Manning (1885-1973)
| | +---John Duran Vickery
| +---Sarah Elizabeth Vickery (1865-)
| +---Sarah Ann Knowles
+---Robert Dewayne Hammac (1967-)
| +---Ester Marie Brodus
Heather Christine Hammac (1989-)
+---Vonda Louise Lane (1965-)