Teignmouth is a town and civil parish in Teignbridge in the English county of Devon, situated on the north bank of the estuary mouth of the River Teign about 14 miles south of Exeter. It has a population of 14,413. In 1690, it was the last place in England to be invaded by a foreign power. The town grew from a fishing port associated with the Newfoundland cod industry to a fashionable resort of some note in Georgian times, with further expansion after the opening of the South Devon Railway in 1846. Today, its port still operates and the town remains a popular seaside holiday location.
A Vision of Britain through Time provides the following description of Teignmouth from John Bartholomew's Gazetteer of the British Isles of 1887:
Teignmouth was a parish in the ancient hundred of Teignbridge, a registration district from 1837 until 1930, and an urban district from 1894 until 1974. It is now part of the district municipality called the Teignbridge District.
For more information, see the EN Wikipedia article Teignmouth. It includes a long history section.