In Two Cartularies of Abingdon Abbey, ed. C.F. Slade and G. Lambrick (Oxford Historical Society, new series 32-3, 1990-1), ii, no.C355 this is described wrongly as the Charter of 1216. 1 I am grateful to the Librarians of Chatsworth for sending me a photocopy of the relevant folios.
The cartulary is listed in C. Breay, J. Harrison and D. M. Smith, Medieval cartularies of Great Britain and Ireland (London, 2010), no.6.