NGRef: NY1031
OSMap: LR89
Type: Fort
NE (8.5) to Blennerhasset (Cumbria)
NW (6) to Maryport (Maryport, Cumbria)
probable road: SSW (17) to Tvnnocelvm (nr. Braystones, Beckermet, Cumbria)

The name of this station is recorded only in the Ravenna Cosmology of the seventh century, where it is appears as Derventione (R&C122), between the compound entry for MAGLONA (Old Carlisle, Cumbria) and the entry for BRAVONIACVM (Kirkby Thore, Cumbria). Epigraphic evidence from the site is sparse (only four inscriptions on stone are listed in the RIB), and neither confirms nor refutes the identification of Derventio with Papcastle. The modern name first appears as Pabecastr in 1260, which is a compound of Old Scandinavian and Old English papi+cæster, meaning 'the Roman fort inhabited by a hermit.'

The Derventio Fort and Garrison Units

Legio Sextae Victrix Pia Fidelis


"The Sixth Legion, Victorious, Loyal and Faithful made this."

(RIB 884)

The sixth legion were based in York for almost the entire period of Roman rule in Britain, and the building inscription shown above could date to any of several periods when campaigns were conducted in the north of England and Scotland, from the Brigantian insurrection of the late 60AD's to the campaigns of Emperor Severus against the Caledonian tribes during the first quarter of the third century.

Cuneus Frisionum Aballavensium - The Formation of Frisians from Aballava


"[...] for the Formation of Frisians from Aballava¹ [...] former veteran of the praetorian guard,² willingly and deservedly fulfilled his vow on the fourteenth and thirteenth days before the calends of November, when Gordianus - for the second time - and Pompeius were consuls.³"

(RIB 882; altarstone; dated 19-20 Oct 241AD)

  1. The title of the unit is discussed below.
  2. Based on the expansion EX V[eteranum] P[raetorii].
  3. Emperor Caesar Marcus Antonius Gordianus Augustus (Gordian III), and Clodius Pompeianus were consules ordinarii 214AD (a.u.c.994). For an outline of the Roman calendar: click here.

The name of this unit, the Cuneus Frisiavonum Aballavensium, itself imparts a wealth of information to the military historian:

  1. the first element of the name describes the unit's size and function, a cuneus was a small irregular auxiliary unit named after the wedge-shaped formation in which they were deployed in battle;
  2. the second element tells us from which native tribe the soldiers were originally levied, and naturally, we can also infer their country of origin, the Frisii or Frisiavones were a Germanic tribe who inhabited the lowlands of northern Belgium and the southern Netherlands;
  3. the final element, Aballavensium is unique to this particular unit, and indicates that they were formerly stationed at ABALLAVA (Burgh-by-Sands, Cumbria) on the western part of Hadrian's Wall.

The 'Frisian Wedge' is also attested on another similar inscription from the Papcastle site (RIB 883; not shown) dated a few years later, at which time the unit was under the command of Nonius Philippus who held the rank of legatus. There are other examples of Cunei Frisiorum; at VINOVIA (Binchester, Durham; RIB 1036; undated) and VERCOVICIVM (Housesteads, Northumberland; RIB 1594; 222-35AD).

See: Air Reconnaissance of North Britain by J.K. St. Joseph in J.R.S. xli (1951) pp.52-65;
The Roman Inscriptions of Britain by R.G. Collingwood and R.P. Wright (Oxford 1965);
Chronology of the Ancient World by E.J. Bickerman (Thames & Hudson, London, 1980);
Oxford Dictionary of English Place-Names by A.D. Mills (Oxford 1998);
Atlas of the Greek and Roman World in Antiquity by Nicholas G.L. Hammond (Bristol Classical Press);
All English translations, including any inherent mistakes, are my own.

Roman Name

Ravenna Cosmography: Derventione

Page Citation: Kevan White (2018) "Roman Britain: DERVENTIO CARVETIORVM"