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Princess Louise was a sidewheel steamboat built in 1869. From 1869 to 1879 this ship was named Olympia. In 1879 the name was changed to Princess Louise, after Princess Louise, Duchess of Argyll, a daughter of Queen Victoria who was married to Marquess of Lorne (1845-1914), Governor General of Canada from 1878 to 1883. Princess Louise was the last sidewheeler to be operated commercially on the coast of British Columbia.