Four or more generations of descendants of Louisa Jane Blackman (1845-1926) if they are properly linked:
1. Louisa Jane Blackman (1845-1926)
- 2. James Thomas Hearn (1867-1944)
- 3. Leslie Gordon Hearn (1900-c1973)
- 3. James Thomas Hearn (1903-c1972)
- 3. Venus Evangeline Hearn (1906-c1976)
- 3. Sylvia Irene Hearn (c1908-c1962)
- 2. Samuel Abraham Hearn (1870-1949)
- 2. Jane Hearn (1873-1941)
- 2. Florence Mary Ann Hearn (1875-1945)
- 2. Emily Kate Hearn (1878-1952)
- 2. Alfred Ernest Hearn (1881-1953)
- 2. Ann May Hearn (1885-1947)
- 2. George William Hearn (1889-1951)