“Louisa's Legacy: The Tale of Lake Louisa's Naming Lake Louisa lies in the Argenteuil region of Quebec, mostly in the Township of Wentworth. Approximately 5.1 kilometers long and 2.3 kilometers wide, the lake has a perimeter of 16.9 kilometers and a maximum depth of 56.6m (according to a 2011 survey). But have you ever wondered how this enchanting lake got its unique name? You will find different variations on how the lake got its name. The most popular being of a talented musician named Louisa M. Holland. In the 1870s, young Louisa would spend her summers working for Mrs. John Abbott at Liberty Hall (now the property of the Lake Louisa Corporation). On trips to Lachute for provisions, Louisa, together with her father would often play piano and sign for the surveyors and they subsequently named the lake in her honor. According to Herb Montgomery’s books, almost 100 years later when the political scene changed in Quebec and the French language became more prevalent and as a result of Bill 22 and Bill 101 many things in Quebec were renamed, including roads, buildings, streets, and Lake Louisa began to appear as ‘Lac Louise’. Determined residents campaigned to maintain ‘Louisa’ and in 1987 Lawrence Irany wrote to the Liberal representative requesting the error and asking the name be corrected. The following year the ‘Commission de Toponymie; of the Quebec government advised him the “official name of the lake was Lac Louisa”.”