the seventeenth century who found language connections developed the idea of a race of Celts inhabiting the islands, but this term was not used by the Greeks or Romans for the inhabitants of Britain or Ireland, nor is there any record of the inhabitants of the British Isles referring to themselves as such. Nevertheless, Roman administration later incorporated the province of Britannia into the praetorian prefecture of Gaul, in common with Hispania, which had Celtiberians. Armorica, where the Bretons would settle, was part of Gallia Celtica, so there were tertiary relations between the Britons and Gallic Celts at least. In addition, the Parisii of Gallia Celtica are thought to have founded Aldborough in Britain. Belgae and Silures also came from Gallic areas, although not strictly "Celtic", but from Gallia Belgica and Aquitainia. Priteni is the source of the Welsh language term Prydain, Britain, and has the same source as the Goidelic term Cruithne. The latter referred to the early Brythonic speaking inhabitants of the Scottish highlands and the north of Scotland, who are known as the Cruithne in Scottish Gaelic, and who the Romans called Picts or Caledonians. Romans Caesar's invasions of Britain brought descriptions of the peoples of what he called Britannia pars interior, "inland Britain", in 55 BC. Throughout Book 4 of his Geography, Strabo is consistent in spelling the island Britain (transliterated) as Prettanikē; he uses the terms Prettans or Brettans loosely to refer to the islands as a group – a common generalisation used by classical geographers. For example, in Geography 2.1.18, …οι νοτιώτατοι των Βρεττανών βορειότεροι τούτων εισίν ("…the most southern of the Brettans are further north than this"). He was writing around AD 10, although the earliest surviving copy of his work dates from the 6th century. Pliny the Elder writing around AD 70 uses a Latin version of the same terminology in section 4.102 of his Naturalis Historia. He writes of Great Britain: Albion ipsi nomen fuit, cum Britanniae vocarentur omnes de quibus mox paulo dicemus. ("Albion was its own name, when all [the islands] were called the Britannias; I will speak of them in a moment"). In the following section, 4.103, Pliny enumerates the islands he considers to make up the Britannias, listing Great Britain, Ireland, and many smaller islands. In his Geography written in the mid 2nd century and probably describing the position around AD 100, Ptolemy includes both Great Britain