| | Mary Bernice Blackett 1913– | | | | Robert Leroy Blackett 1886–1955 Hannah Sophia Augusta Hansen 1888–1922 Sarah Wanda Grenhalgh 1897–1971 | | | | Robert Collingwood Blackett 1856–1932 Mary Ellen Morris 1868–1887 Lena Schardert Schroeder 1864–1951 | | | | George Blackett 1829–1905 Hannah Smithson 1835–1916 | | | | Robert Collingwood Blackett 1807–1878 Eleanor (Ellen) Mitchell 1810–1884 | | |
| |
|
| | | Elizabeth Ann Scriggins 1841–1933 |
| |
|
| | | Mary Ann Nielsen 1859–1901 |
|
|
|
|