Four or more generations of descendants of Percy Stanley Marks (1911-1988) if they are properly linked:
1. Percy Stanley Marks (1911-1988)
- 2. Unknown Marks (1937-1937)
- 2. Sylvia Gweneth Marks (1939)
- 3. Brian Voon Yee Yap (c1965)
- 3. Joanne Su Chin Yap (c1970)
- 3. Jeremy Voon Loong Yap (c1975)
- 2. Dorothy Enid Marks (1942)
- 2. Patricia Anne Marks (1947)