Launceston was one of 21 parliamentary boroughs in Cornwall between the 16th and 19th centuries; unlike many of these, which had been little more than villages even when established and were rotten boroughs from the start, Launceston had been a town of reasonable size and importance though much in decline by the 19th century. The borough consisted of only part of the present town, as Newport was a separate borough in itself from 1554, though Newport and Launceston were joined together as Dunheved, collectively returning members, earlier in that century.