Four or more generations of descendants of Alida Keizer (1905-1953) if they are properly linked:
1. Alida Keizer (1905-1953)
- 2. Rie Tol (1935-1995)
- 2. Jaap Tol (1937-)
- 3. Ger Tol (1964-)
- 2. Jan Tol (1938-)
- 2. Nicolaas H. Tol (1939-)
- 3. Yvonne A.A.M. Tol (1966-)
- 4. Martine van Leyden (1988-)
- 4. Diane van Leyden (1990-)
- 4. Alex van Leyden (1992-)
- 3. J.N. Ronald Tol (1968-)
- 4. Anne (2001-)
- 4. Wouter (2005-)
- 3. Richard S.J. Tol (1969-)
- 3. Yvonne A.A.M. Tol (1966-)
- 2. Aad Tol (1941-)
- 2. Kees Tol (1943-)
- 2. Lien Tol (1945-)
- 2. Alie Tol (1946-)