Records of the Chancellor and Council of the Duchy of Lancaster, concerned principally with the administration of the Duchy estate throughout England and Wales throughout England and Wales and the safeguarding of Duchy privileges and rights.
Also, records of the Court of Duchy Chamber, consisting mainly of equity proceedings.
The following series numbers have not been used: DL 2, DL 11, DL 18, DL 19, DL 22, DL 33.