Narragansett /ˌnærəˈɡænsɪt/ is an extinct Algonquian language formerly spoken in most of what is today Rhode Island by the Narragansett people. It was closely related to the other Algonquian languages of southern New England like Massachusett and Mohegan-Pequot. The earliest study of the language in English was by Roger Williams, founder of the Rhode Island colony, in his book A Key Into the Language of America (1643).