


| Father | Arthur Dashiell DeGroff (17 April 1885 - 3 February 1927) |
| Mother | Helene Tonkin (25 September 1885 - ) |
| Record Created: 4 November 2009; Last Edited: 4 November 2009 |
| Person ID | 226 |
| Name | Mary DeGroff |
| Gender | Female |
| Born | 4 January 19181 |
| Married | 7 June 1941 in Hanover, New Jersey to John Preston ‘Jack’ Mailler, Jr.1, 2 |
| Spouse 1 |
| Born | 5 June 1918 in Madison, Morris County, New Jersey |
| Married | 7 June 1941 in Hanover, New Jersey to Mary DeGroff |
| Died | 27 June 1994 in Escondido, California |
| Children | of Mary DeGroff and John Preston ‘Jack’ Mailler, Jr.: |
| +1. |
| Born | 11 February 1943 |
| Married | to Nicholas Arnold Knapp |
| Died | 6 October 2020 |
| +2. |
| Born | 8 August 1944 |
| Married | 21 April 1972 in Washoe County, Nevada to Phyllis M. McCraw |
| Married | to Donna Jean McMillan |
| 3. |
| Born | 12 March 1947 |