NEWPORT, a quondam borough in St. Stephen-by-Launceston parish, Cornwall; on a branch of the river Tamar, adjacent to Launceston, and separated from that town only by a narrow rivulet. It anciently was joined to Launceston, under the name of Dunheved. It separately sent two members to parliament from the time of Edward VI. till the passing of the Reform act; and it then was disfranchised, and incorporated with Launceston. It is a small place; and, but for connexion with Launceston, would be a mere village.

(John Marius Wilson, Imperial Gazetteer of England and Wales (1870-72))