Wintergreen CemeteryWintergreen Cemetery is a historic cemetery in Port Gibson, Mississippi. It was added to the National Register of Historic Places on July 22, 1979. It is located at East Greenwood Street.Notable burials Samuel Reading Bertron, banker Benjamin G. Humphreys, Civil War general James G. Spencer, US Representative Earl Van Dorn, Civil War general Peter Aaron Van Dorn lawyer and plantation owner, father of Earl, above.