| Father | Samuel Lee Robertson (b. 3 August 1893, d. 15 May 1950) |
| Mother | Winifred Clark Davis (b. 1893, d. 1944) |
| Son | Kevin Clark McMahon+ (b. 11 October 1948, d. 28 December 2008) |
| Pedigree Chart | |
| Included in charts - lists | Descendants of James Francis Anderson b. ca 1726 Descendants of John Shirley b. 1725 Descendants of Jonas Meador, b. 1698 |
| Relationship | 4th cousin 1 time removed of Charles Ryland ("Ryland") Scott 9th cousin of Carol Jay Gilstrap 4th cousin 3 times removed of Isaac Silas Vaughn 4th cousin 3 times removed of Katherine Gilstrap Scott 4th cousin 3 times removed of Joseph Ryland Scott 4th cousin 3 times removed of Charles Parker ("Parker") Scott 4th cousin 3 times removed of Orly Marie Vaughn 4th cousin 3 times removed of Avital Catherine Vaughn |
| Birth | 2 August 1926 | Elsie Louise Robertson was born on 2 August 1926 in Chicago, Cook, Illinois, USABG. |
| Marriage | 19 January 1948 | Brendan W. McMahon and she were married on 19 January 1948 in Cook, Illinois, USABG.1 |
| Death | 14 October 2015 | She died on 14 October 2015 at age 89 in Fort Davis, Jeff Davis, Texas, USABG. |
| Last Edited | 20 August 2021 |