 Hingham and Hull would leave Suffolk County and join Plymouth County in 1803.Revere was set off from Chelsea and incorporated in 1846 and Winthrop was set off from Revere and incorporated in 1852.In the late 19th century and early 20th century, Boston annexed several adjacent cities and towns including Hyde Park, Roxbury, West Roxbury, and Dorchester from Norfolk County and Charlestown and Brighton from Middlesex County, resulting in an enlargement of Suffolk County.