Four or more generations of descendants of Charles Allen Willis (1883-1955) if they are properly linked:
1. Charles Allen Willis (1883-1955)
- 2. Roland Charles Willis (1908-1986)
- 2. Arthur Eilden Willis (1911-1992)
- 2. Irene Grace Willis (1913-?)
- 2. Sylvia Gladys Willis (1916-?)
- 2. Roland Charles Willis (1908-1986)