The Decantae were a people of ancient Britain

Great Britain

Great Britain or Britain is an island situated to the northwest of Continental Europe. It is the ninth largest island in the world, and the largest European island, as well as the largest of the British Isles...

, known only from a single mention of them by the geographer

Geographer

A geographer is a scholar whose area of study is geography, the study of Earth's natural environment and human society.Although geographers are historically known as people who make maps, map making is actually the field of study of cartography, a subset of geography...

 Ptolemy

Ptolemy

Claudius Ptolemy , was a Roman citizen of Egypt who wrote in Greek. He was a mathematician, astronomer, geographer, astrologer, and poet of a single epigram in the Greek Anthology. He lived in Egypt under Roman rule, and is believed to have been born in the town of Ptolemais Hermiou in the...

 c. 150. From his general description and the approximate locations of their neighbors, their territory was along the western coast of the Moray Firth

Moray Firth

The Moray Firth is a roughly triangular inlet of the North Sea, north and east of Inverness, which is in the Highland council area of north of Scotland...

, in the area of the Cromarty Firth

Cromarty Firth

The Cromarty Firth of Cromarty') is an arm of the North Sea in Scotland. It is the middle of the three sea lochs at the head of the Moray Firth: to the north lies the Dornoch Firth, and to the south the Beauly Firth....

. Ptolemy does not provide them with a town or principal place.

The name has a base in the Celtic root *dec-, meaning "good" or "noble". There was another tribe called Decantae or Decanti in some sources located in Northern Wales, see Deceangli

Deceangli

The Deceangli or Deceangi were one of the Celtic tribes living in Britain, prior to the Roman invasion of the island. The tribe lived mainly in what is now north-east Wales, though it is uncertain whether their territory covered only the modern counties of Flintshire, Denbighshire and part of...

.