LOrcas Island is the largest of the San Juan Islands of the Pacific Northwest, in northwestern Washington, United States. The name "Orcas" is a shortened form of Horcasitas, from Juan Vicente de Güemes Padilla Horcasitas y Aguayo, 2nd Count of Revillagigedo, the Viceroy of New Spain who sent an exploration expedition under Francisco de Eliza to the Pacific Northwest in 1791
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