| Birth* | Guillaume Lemieux was born on 17 November 1648 at La Nativité de Nôtre-Dame, Beauport, Québec, Québec, Canada. |
| He was the son of Pierre Lemieux and Marie Bénard. |
| Christening | Guillaume Lemieux was christened on 21 November 1648 at Nôtre-Dame, Québec, Québec, Canada. |
| Marriage* | He married Elisabeth Langlois, daughter of Noël Langlois and Francoise Grenier, on 15 December 1669 at La Nativité de Nôtre-Dame, Beauport, Québec, Québec, Canada. |
| Engagement | Guillaume Lemieux and Elisabeth Langlois were engaged. |
| Marriage Contract | A contract for the marriage of Guillaume Lemieux and Elisabeth Langlois was signed on 28 November 1669 at Québec, Québec, Canada; Notary: Michel Fillion. |
| Death* | Guillaume Lemieux died on 15 October 1725 at Nôtre-Dame de L'Assomption, Berthier, Bellechasse, Québec, Canada, at age 76. |
| Burial* | He was buried on 15 October 1725 at Nôtre-Dame de L'Assomption, Berthier, Bellechasse, Québec, Canada. |
| Note* | He Recorded in the census of 1666 at l'Ile d'Orléans, working a one-month contract with Jean PELLETIER; recorded in the census of 1681 at l'Ile-aix-Oies. |
