Nuns' Island (officially Île des Sœurs; ) is an island located in the Saint Lawrence River that forms a part of the city of Montreal, Quebec. It is part of the borough of Verdun. History Originally called Île Saint-Paul in honour of the founder of Montreal, Paul de Chomedey, Sieur de Maisonneuve, the island was initially acquired in 1634 by Jean de Lauzon, future governor of New France. The island was included in the expansive seigneurie of La Citière on the south shore of the St. Lawrence. In 1664 he ceded the island in three equal parts to three prominent citizens of Ville-Marie: Jacques Le Ber, sieur de Saint-Paul et Senneville; Claude Robutel de Saint-André, sieur de La Noue; and Jean de la Vigne, who transferred his portion to Jacques Le Ber's sister Marie in 1668. She, in turn, sold her share to her brother, leaving the island divided between the seigneuries of Saint-Paul and La Noue. The nuns of the Congrégation de Notre-Dame acquired the seigneurie de La Noue in 1706. Following the British conquest, the other seigneurie was auctioned; the nuns purchased it too in 1769, becoming the sole owners of the island for the next 187 years. Their ownership would give the island its unofficial name, attested since the early 19th century. The nuns farmed the island, building houses and agricultural buildings, and later hired women to help with raising livestock. Owing to a dispute between the congregation and the municipality of Verdun over taxes in the late 19th century, the island, which had no fixed link to the Island of Montreal, was made a municipality (L'Île-Saint-Paul) in 1899. The nuns continued farming until 1956, when they sold the island to the Quebec Home and Mortgage Co. Ltd. In the same year, the provincial government merged it with Verdun. By that time the name Saint-Paul had fallen out of use, and the name île des Sœurs was officialized. The nuns entirely left the island in 1957. The development of the island began in earnest with the opening of the Champlain Bridge in 1962. The urbanization was carried out by the Metropolitan Structures company of Chicago, under a master plan by the American company of Johnson, Johnson, and Roy. Several master plans were previously drawn up by the architect Harold Ship, but they were never realized. Phase 1 of the master plan was completed in 1968 when the