 | George William Joseph Hartwell (1888-1968) 
|
 | Rebecca Mary Lines (1892-1954)
|
 | Frederick George Hartwell (1911-1963)  |
 | William Albert (Bill) Hartwell (1913-1965) |
 | Dorothy Rebecca Ada (Dolly) Hartwell (1914-1975) |
| Male Hartwell (1916-1916) |
 | Phyllis Clara Hartwell (1916-1983) |
 | Gerald Clarence Hartwell (1922-1983) |
 | Molly Hartwell (1926-1976) |
 | Betty Jean Hartwell (1928-2015) |
 | Rosemarie Elizabeth Hartwell (1936-1977) |
 | Patricia (Thelma) Hartwell (1920-2012)
|
 | Percy Ambrose Codman (1914-1997) |
