[4] The writings of the early days of the French colony testify that the site is used by the Iroquois since in 1665 Charles Le Moyne d'Iberville went there to hunt and was surrounded and captured there.

Michel-Sidrac Du Gué de Boisbriand, obtained in 1667 permission to settle on the island and therefore became its first historic occupant.

Du Gué de Boisbriand is captain of a fireboat in the Carignan Regiment and arrived in America with the expedition Carignan-Sallière.

In 1667 with the help of Jean Hayet dit Malo, Captain Du Gué cleared the island and several oak logs were shipped to the Quebec shipyard.

In 1675, a notarial deed tells us that he rents his farm on the island to Nicolas Ragueneau and Louis Truchon dit Léveillé for a period of 5 years.

In 1681 he owned two acres in Varennes and he settled there and left a large number descendants bearing the names of Choquet or Choquette.

[5] Du Gué de Boisbriand died in 1689 after a full military career, but it seems that he had financial difficulties since the inventory of his property on Sainte-Thérèse Island drawn up in 1688 suggests a neglected domain.

The Captain had left his family and his lordship of Île Sainte-Thérèse in the care of his friend Charles-Gaspard Piot de Langloiserie, a French gentleman who arrived in New France in 1691 and who in the same year married the eldest daughter of Du Gué, Marie-Thérèse.

During his visit at the beginning of the 18th century mentions that "the land is good for the government to produce all kinds of grains and vegetables, aussy all the inhabitants are very comfortable there".

The latter died in 1715, leaving the lordship to the care of his wife Marie-Thérèse Piot (née Du Gué) for about a quarter of a century.

[4] In 1742, Louis-Hector Piot de Langloiserie, eldest son of Hector and Marie-Thérèse became the new lord of the island a year before the death of his mother.

From him, we know that there were discussions of marriage between him and Marguerite Du Frost de la Jammerai (who will later be known as Mère d'Youville) but that he later married Esther Bridge and lived for a time in the English colonies.

In 1726 he had obtained from New York legislation the privilege of porpoise fishing and he would have resided in this state for several years before returning to Quebec.

[5] During the English conquest, Île Sainte-Thérèse was occupied by General Murray in 1760 to camp his troops there before taking Montreal.

This agronomist of Swiss origin who published several writings in the form of articles or treatises including in 1834 "Conversations on agriculture, by a inhabitants of Varennes" and in 1835 a small book called "Notes divers sur le Canada".

[9] With his brother-in-law Doctor Duchesnois, Girod becomes a member of the Sons of Liberty and keeps a diary in German and Italian which describes in detail the events of 1837.

We know in particular that in November 1837 Papineau and Edmund Bailey O'Callaghan canoe from Pointe-Aux-Trembles to Île Sainte-Thérèse to look for Girod, but it is in Varennes the next day that they will find him and it is there that one of the decisive meetings that will have led to the armed insurrection.

We agreed to his proposal, but we added that this first measure amounted to an act of open rebellion and that it would be advisable to look for ways to organize the populace and obtain arms and ammunition.

Despite its agricultural wealth, the island having no hamlet or church, the inhabitants are dependent on the cities of Varennes and Pointe-Aux-Trembles for trade and religious and administrative affairs.

[13] Île Sainte-Thérèse, which includes a wide variety of natural environments (woodlands around the perimeter, central meadows and swamps), is considered a site of wildlife interest.

[14] In particular, there are fish such as muskellunge, birds such as heron, butor, tern and gulls, and mammals such as field vole, raccoon, red fox, long-tailed weasel and the muskrat.