| | Jean Denis Gaston PIAT 1924–2018 Françoise ENGEL 1920–2005 | | |
| | Gaston Emile PIAT 1896–1973 Jeanne Marie TIMMER 1895–1941 Clotilde HUSSON 1900–1974 | | |
Léonie Augustine PIAT 1889–1889 | | |
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| | Augustine LEMAN 1823–1885 | | |
| | Marie Anne LEBLANC 1783–1849 | | | | Jean François Joseph LEBLANC – Marie Jeanne Thérèse Joseph LORTHIOIS – | | | | Marie Anne dite Françoise DELEDICQUE 1701–1742 Marie Catherine GALLOIS – | | | | Guillaume Allard LORTHIOIS – |
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| | | Pierre Philippe PIAT 1731– | | | | | | | | | Marie Marguerite DUJARDIN – |
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