Four or more generations of descendants of James Allen Cairns Robertson (1871-1920) if they are properly linked:
1. James Allen Cairns Robertson (1871-1920)
- 2. Mildred Emily Ann Robertson (1896-1947)
- 3. Barrington Francis Carman (1922)
- 3. Rex James Carman (1924-1924)
- 3. Valerie Carman (1925)
- 2. Dorothy Agnes Robertson (1903-1995)
- 2. Marjorie Robertson (1905-1992)
- 2. James A Robertson (1910-1955)