Shell keep of the type that may have existed at Ullerwood Castle Google map
Source: TripAdvisor

Ullerwood Castle, also known as Ullersford Castle,[a]Also Ullenwood, Uttersford, Ullerwada, Ullerwda. Castlewood, Bollin, Oversleyford[1] is an early medieval fortification, possibly a shell keep, in Ringway, Greater Manchester, England.[2] The only contemporary reference to it appears in a document of 1173, stating that the Norman knight Hamo de Massey held the castles of Ullerwood and DunhamAn early medieval moated motte and bailey castle just to the northwest of present-day Dunham Massey Hall in Greater Manchester, England. during the revolt against King Henry II that year.[3] The present-day site lies beneath a modern house.[4]




Nevell, Mike. The Archaeology of Trafford. Trafford Metropolitan Borough with University of Manchester Archaeological Unit, 1997.
Newman, Caron. “Medieval Period Resource Assessment.” Archaeology North West, vol. 8, 2006, pp. 115–144.