Cohors IV Gallorum equitata

In the 3rd century it is attested, from 213 onwards, in the fort at Vindolanda (Chesterholm) near Hadrian's Wall, but the regiment's inscriptions have also been found, undatable, at Risingham, Templeborough, Castlehill, Castlesteads and High Rochester.

[3] Castlehill was a fort on the Antonine Wall in Caledonia (Scotland) that was held for only 20 years by the Romans.

[citation needed] But the Notitia Dignitatum, a late Roman official document, records a cohors IV Gallorum at Vindolanda under the dux Britanniarum, the commander of limitanei (border forces) along Hadrian's Wall.

[4] The Western section of the Notitia was drawn up in the 420's but the British units must date to before 410, when the island was evacuated by the Roman army.

The names of ten praefecti (regimental commanders) are preserved, of which the origin of just one is certain: Quintus Petronius Urbicus from Brixia (Brescia) in northern Italy (c. 220).

A recreation of Templeborough Roman Fort in Britannia. A tile stamped by Cohors IV Gallorum was discovered at the former fort. ^{[

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