The River Deer is river in

Devon Devon ( , historically known as Devonshire , ) is a ceremonial and non-metropolitan county in South West England. The most populous settlement in Devon is the city of Plymouth, followed by Devon's county town, the city of Exeter. Devon is ...

, a tributary of the River Tamar, joining it at

North Tamerton North Tamerton ( kw, Tre war Damer) is a village and civil parishes in England, civil parish in east Cornwall, England, UK. The village is situated approximately eight miles (13 km) southeast of Bude and eight miles (13 km) north of L ...

Toponymy

The root of the name is uncertain, since no early forms have been found (in 1929 to 1931 ''Deer'' is used in Moore's ''History of Devonshire''). A suggested

back-formation In etymology, back-formation is the process or result of creating a new word via inflection, typically by removing or substituting actual or supposed affixes from a lexical item, in a way that expands the number of lexemes associated with the c ...

is from Derriton, perhaps supported by ''aqua de Dyraton'' from 1282 in the

Assize Rolls The courts of assize, or assizes (), were periodic courts held around England and Wales until 1972, when together with the quarter sessions they were abolished by the Courts Act 1971 and replaced by a single permanent Crown Court. The assizes ex ...

References

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Deer Deer or true deer are hoofed ruminant mammals forming the family Cervidae. The two main groups of deer are the Cervinae, including the muntjac, the elk (wapiti), the red deer, and the fallow deer; and the Capreolinae, including the reindeer ...

Tamar catchment