Sunnyside was the name originally applied to the Dugald area as it was the name of the first post office in what is now the village of Dugald; as the village grew it became known as North Plympton(and then later, as Dugald). The Sunnyside name then came to be identified with the Oakbank area ca. 1885. The first meetings of what was known as the Sunnyside Presbyterian congregation were held in 1873 in the home of a Mr. George Miller and conducted by Professor Hart of Manitoba College as well students. The first church was in use by 1880. In 1901, the church was moved into the village. Other communities that appear in the Communion Roll after 1900 include Garson, Klondike, Cloverleaf and Hazelridge. The congregation was known as Sunnyside Presbyterian until ca. 1906, when the name changed to Oakbank Presbyterian Church. Dugald and Oakbank united into one field in 1911. In 1925, Oakbank Presbyterian Church officially joined The United Church of Canada to become Oakbank United Church.