Isurium Brigantum (modern Aldborough, North Yorkshire) was the civitas capital of the Brigantes, established in the early 2nd century AD on or near Dere Street, roughly 15 miles northwest of York (Eboracum). While a preceding Flavian-period fort has long been suspected given its strategic position on the route north, definitive evidence for a military origin remains elusive; the town itself flourished from c. AD 120 into the late 4th century, eventually enclosed by walls and bastions in the later Roman period.
Source: Pleiades — A Community-Built Gazetteer and Graph of Ancient Places. View the Pleiades record →
As the administrative centre of the Brigantes — the largest tribal grouping in Britain — Isurium served as the civilian focus through which Rome governed northern England, complementing the legionary fortress at York. Its position on Dere Street made it an important node linking the militarised frontier zone to the south.
Excavations from the 18th century onwards, and more recently the Aldborough Roman Town Project (Cambridge/Durham), have revealed the town walls, gates, street grid, substantial townhouses, and notable mosaics (including the "Wolf and Twins" and geometric pavements still preserved on site). Geophysical survey has mapped much of the intramural plan and extramural activity, but evidence for an underlying fort — though plausible given parallels at Catterick (Cataractonium) and Corbridge — has not been securely identified.
Isurium Brigantum (modern Aldborough, North Yorkshire) was the civitas capital of the Brigantes, established in the early 2nd century AD on or near Dere Street, roughly 15 miles northwest of York (Eboracum). It is recorded in the Pleiades gazetteer of ancient places as a fort site from the Roman period in Britain.
Isurium is classified as a Roman fort — a military site in the Pleiades ancient world gazetteer. Roman Britain's archaeology encompasses thousands of sites ranging from legionary fortresses and marching camps to villas, temples and towns.
Several Roman sites lie within a short distance, including Studforth Hill (0.4 km), Aldborough Studforth Hill (0.4 km), Roecliffe Fort (1.7 km). Aubrey Research maps over 2,200 Roman sites across Britain, drawn from the Pleiades ancient world gazetteer.
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