| Birth* | Marguerite Mercier was born circa 1770 at St Gervais, Bellechasse, Québec, Canada. |
| Christening | She was christened circa 1770 at St Gervais, Bellechasse, Québec, Canada. |
| She was the daughter of Pierre Mercier and Marie-Anne Fontaine. |
| Divorce* | Marguerite Mercier and Pierre-Joseph Fontaine were divorced. |
| Marriage* | Marguerite Mercier married Pierre-Joseph Fontaine, son of Pierre-Nöel Fontaine and Marie-Magdaleine Delisle, on 30 October 1788 at St Jean-IO, Montmorency, Québec, Canada. |
| Engagement | Marguerite Mercier and Pierre-Joseph Fontaine were engaged. |
| Death* | Marguerite Mercier died after 1790 at St Gervais, Bellechasse, Québec, Canada. |
| Burial* | She was buried after 1790 at St Gervais, Bellechasse, Québec, Canada. |
| Married Name | Her married name was Fontaine. |
