| Birth* | Guillaume Nadeau was born on 1 December 1708 at St Etienne, Beaumont, Bellechasse, Québec, Canada. |
| He was the son of Denis Nadeau and Charlotte Cassé. |
| Christening | Guillaume Nadeau was christened on 3 December 1708 at St Etienne, Beaumont, Bellechasse, Québec, Canada. |
| Marriage* | He married Ursule Jahan, daughter of Jacques Jahan and Anne Faureau, on 21 August 1747 at St Joseph, Pte de Lévis, Lévis, Québec, Canada. |
| Marriage License | Guillaume Nadeau and Ursule Jahan obtained a marriage license. |
| Engagement | Guillaume Nadeau and Ursule Jahan were engaged. |
| Death* | Guillaume Nadeau died after 1759 at St Charles, Bellechasse, Québec, Canada. |
| Burial* | He was buried after 1759 at St Charles, Bellechasse, Québec, Canada. |
