up to the 12th generation
0━┳
Joseph Hartwell 1849-1882 &1878 Constance Everett Scutt 1859-1932
┣━1━━
Walter John Hartwell 1879-1935 &1899 Rhoda Rebecca Susannah Lawn Kerrigan 1874-1950
┣━2─┬
Elizabeth May Hartwell 1880-1942 &1901 Stuart Sidney Wilkinson 1867-
┃ ├─1━━
Carl Stuart Wilkinson 1902-1931
┃ ├─2━━
Frank Wilkinson 1909
┃ ├─3──
Clare Wilkinson 1911-
┃ ├─4━━
Jack Wilkinson 1912-1912
┃ └─5━━
George E. Wilkinson 1914-
┗━3━━
Joseph H. Hartwell 1882-1885
Total: 8 descendants (12 individuals with spouses)