| Birth* | Joseph Lefebvre dit Descoteaux was born after 17 January 1752 at Québec, Canada. |
| Christening | He was christened after 17 January 1752 at Québec, Canada. |
| He was the son of Ange Lefebvre dit Descoteaux and Magdeleine Desrosiers. |
| Marriage* | Joseph Lefebvre dit Descoteaux married Monique Lafond, daughter of Antoine Lafond and Marie-Josèphe Chevrefils dit Belisle, on 9 January 1775 at St Antoine, Baie du Febvre, Yamaska, Québec, Canada. |
| Death* | Joseph Lefebvre dit Descoteaux died after 9 January 1775 at Québec, Canada. |
| Burial* | He was buried after 9 January 1775 at Québec, Canada. |
