Court rolls (and in some cases, court books) of manors (some separated from LR 3), honors, hundreds and other local jurisdictions (including the Marcher lordships of the Duchy of York), the majority of which belonged to the crown, or which came to the crown with forfeited lay and ecclesiastical estates. The principal courts are those of court leet and court baron. The series includes estreats (lists of fines and amercements) and miscellaneous related documents, such as drafts, lists of customs, etc. It also includes the court rolls of the Marcher Lordship of Ruthin or Dyffryn Clwyd from 1294 to 1654; the remainder are in WALE 15.

The series was brought together from various sources in the late nineteenth century, principally from the records of the Exchequer: the Augmentations Office, the Treasury of the Receipt, the King's and Lord Treasurer's Remembrancers (mixed with Minister's Accounts and other miscellanea) and the auditors of the land revenue; and also from those of Chancery, the State Paper Office, the Palatinates of Chester (otherwise in CHES) and Durham, and the Welsh records of the Chester circuit. Also contains some records previously in E 40.