The Roman Map of Britain Derventione Stamford Bridge, Yorkshire

Derventione (AI 466₂ Iter I)
Derventione var. Dervencione (ND xl₁₆ illustration)
Derventione (ND xl₃₁ text)

    AI's Derventione takes its name from the Yorkshire river Derwent. Margary 2e crosses the Derwent at Kexby (se7051), Margary 81a at Buttercrambe (se7358) and Malton (se7971), and Margary 80a and 810 at Stamford Bridge (se7155). Until recently the only known fort on the Derwent was at Malton. The York-Derventione distance is recorded  in Iter I as seven miles. Seven miles was inadequate to reach Malton, and was regarded as an error for seventeen which is tolerably close to the correct mileage of eighteen.

There is mounting evidence of a Roman fort at Stamford Bridge and another at Buttercrambe.

STAMFORD BRIDGE SE 7152 5577

The Notitia Dignitatum's Derventione is between entries for Longovicio Lanchester (NZ1546) and Segeduno Wallsend (nz3066). A consideration of possible geographical context would suggest that this Derventione is on the Northumberland Derwent. The fort at Whickham (nz2160) is on the Team, but is only two miles east of the Northumberland Derwent. Such an assignment is would be credible to the same extent as Bremia and Alauna that are not immediate to their eponymous rivers. The Roman fort at Benwell (nz2164) overlooks the mouth of the Derwent, but its name is recorded as Condecor/Conderco with certainty of assignment. Also, on the Northumberland Derwent is Vindomora Ebchester (NZ1055) fixed by the AI's Iter I. In this situation a geographical context is probably illusory as the ND's author appears to have been more interested in gathering like titles. 

The ND records Derventione's unit as Praefectus numeri superuenientium Petuariensium. Petuataria is considered to be at Brough-on-Humber or the immediate vicinity.

BUTTERCRAMBE WITH BOSSALL; RYEDALE; NORTH YORKSHIRE NMR_NATINV-59537 FORT, Roman SE 7132 5596
STAMFORD BRIDGE; EAST RIDING OF YORKSHIRE NMR_NATINV-59553 FORT, Roman SE 7152 5577