A group of parochial records of Llanbrynmair, including assessments on Rhiwsaeson and part of Tyrymynech towards the church, 1728-1740; a fragment of an assessment, 1742; vestry minutes, 1741-1745; and receipts to the churchwardens and overseers of the poor, 1720-1825.

Account sheets of churchwardens of the parish of Llanbrynmaire, Montgomeryshire, 1708-1743 (with gaps) and undated.

Transcripts made by Richard Bennett at the Bangor Diocesan Registry of entries in bishops' transcripts relating to the parishes of Llanwrin, Cemmaes, Machynlleth, Darowen and Llanbrynmair, Montgomeryshire, 1662-1757.