Genealogy of Sylvain Bonjour
| Great grandparents | ||||||||
| Grandparents | Emile Ernest Bonjour | Mathilde Eva Junod | ? Ritschard | Emma Tschanz | ||||
| Parents | Georges-Ernest Bonjour (1914 - 2004) | Margaretha Ritschard (?) | ||||||
| Person | Sylvain Bonjour born in 1947 | |||||||
| Sibling(s) | Daisy Bonjour (~1942 - 2016) Blaise Georges Bonjour (1944) Monique Béatrice Bonjour (1945) Jean-François Bonjour (1950 - 2025) Claude-Alain Bonjour (1952) | |||||||
| Partner / Progeny | Sylviane Florine Emma Humbert-Droz (1948) | Yann Bonjour (1973) Séverine Bonjour (1975) | ||||||