The Silures were a powerful and warlike tribe

Tribe

A tribe, viewed historically or developmentally, consists of a social group existing before the development of, or outside of, states.Many anthropologists use the term tribal society to refer to societies organized largely on the basis of kinship, especially corporate descent groups .Some theorists...

 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...

, occupying approximately the counties of Monmouthshire

Monmouthshire (historic)

Monmouthshire , also known as the County of Monmouth , is one of thirteen ancient counties of Wales and a former administrative county....

, Breconshire and Glamorganshire of present day South Wales

South Wales

South Wales is an area of Wales bordered by England and the Bristol Channel to the east and south, and Mid Wales and West Wales to the north and west. The most densely populated region in the south-west of the United Kingdom, it is home to around 2.1 million people and includes the capital city of...

; and possibly Gloucestershire and Herefordshire of present day England. They were bordered to the north by the Ordovices

Ordovices

The Ordovices were one of the Celtic tribes living in Great Britain, before the Roman invasion of Britain. Its tribal lands were located in present day Wales and England between the Silures to the south and the Deceangli to the north-east...

; to the east by the Dobunni

Dobunni

The Dobunni were one of the Celtic tribes living in the British Isles prior to the Roman invasion of Britain. There are seven known references to the tribe in Roman histories and inscriptions. The latter part of the name possibly derives from Bune, a cup or vessel...

; and to the west by the Demetae

Demetae

The Demetae were a Celtic people of Iron Age Britain who inhabited modern Pembrokeshire and Carmarthenshire in south-west Wales, and gave their name to the county of Dyfed.-Classical mention:...

.
According to Tacitus

Tacitus

Publius Cornelius Tacitus was a senator and a historian of the Roman Empire. The surviving portions of his two major works—the Annals and the Histories—examine the reigns of the Roman Emperors Tiberius, Claudius, Nero and those who reigned in the Year of the Four Emperors...

's biography of Agricola

Gnaeus Julius Agricola

Gnaeus Julius Agricola was a Roman general responsible for much of the Roman conquest of Britain. His biography, the De vita et moribus Iulii Agricolae, was the first published work of his son-in-law, the historian Tacitus, and is the source for most of what is known about him.Born to a noted...

, the Silures usually had a dark complexion and curly hair.