| Father | Male Médéric Pierre Delphin COUAILLET |
| Born | 3 Jan 1860 | Graval, Seine-Maritime, France |
| Died | 27 Feb 1929 | Graval, Seine-Maritime, France |
| Buried | ||
| Married | 27 Apr 1886 | Saint-Saire, Seine-Maritime, France |
| Father | ||
| Mother | ||
| Mother | Female Argentine Célestine DAVOUT |
| Born | 30 Nov 1863 | Graval, Seine-Maritime, France |
| Died | 17 Aug 1945 | Graval, Seine-Maritime, France |
| Buried | ||
| Father | Charles Jules DAVOUT | F9687 Group Sheet | |
| Mother | Marie Madeleine Opportune LOUIS | F9687 Group Sheet | |
| Child 1 | Male + Médéric Charles COUAILLET |
| Born | 26 Apr 1887 | Graval, Seine-Maritime, France |
| Died | 1 Jul 1945 | Saint-Jacques-d’Aliermont, Seine-Maritime, France |
| Buried | ||
| Spouse | Andrea Georgina Ernesta LEROUX | F9705 | |
| Married | 27 Feb 1911 | Saint-Aubin-le-Cauf, Seine-Maritime, France |
| Spouse | Pauline VEPIERRE | F9706 | |
| Married | 15 Jan 1942 | Saint-Jacques-d’Aliermont, Seine-Maritime, France |