Seigniory Era

In September of 1683, Michel Sidrac Dugué, captain of the Carignan-Sallières regiment and commander of Ville-Marie, received a grant of large tracts of land as a token of the French Crown's gratitude for loyal military services. In fact, Louis XIV entrusted Dugué, a valorous and courageous soldier in his eyes, with the colonization of the Mille-Îles Seigneury.

First Permanent Settlers

In 1714, the French Crown once more granted the privilege to run the Mille-Îles Seigneury to one of its subjects whose mission was to colonize the region. Thus, Jean Petit and Charles-Gaspard Piot de Langloiserie, the husbands of Marie-Charlotte-Élisabeth and Marie Thérèse—the two daughters of Sidrac Dugué—became the new overseers of the Seigneury. Charles-Gaspard Piot de Langloiserie died in 1715, and Marie-Thérèse de Langloiserie, his widow, was left with a great number of young children and the responsibility of supervising Sainte-Thérèse Island as well as the Mille-Îles Seigneury.

Country Setting

In 1880, J.P. Withers, a Canadian Pacific Railway officer, set up home in Rosemère. Impressed by the compelling charm of the many wild-growing roses, he decided to call the place "Rose,” to which he simply added the suffix "mere,” an old Anglo-Saxon word for swamp. He then went to Ottawa to register the name in use ever since.

Growth of Rosemère

At the time of the Second World War, Rosemère was already a flourishing community. Rosemère was home to a Red Cross branch office, and a citizens association was founded with the aim of obtaining better services from the Town of Sainte-Thérèse. Rosemère did not yet exist as an independent town, as it was still under the jurisdiction of the municipality of Sainte-Thérèse.

Rosemère... The 70s, 80s and 90s

In December 1975, the Municipal Housing Board was formed. Its main function is to manage the Terraces Rosemère, a home for senior citizens. The provincial government and the Town of Rosemère are jointly absorbing the home's annual deficit.

The New Millenium

In the beginning of the years 2000, Rosemère counts a little more than 13,000 citizens. Its development is almost complete, with more or less than 700 lots to build. We now tend to improve the built heritage.