- 427-483.
- Sub-fonds
- 1488-2003.
Deeds and documents, mainly relating to the Morrall family of Plas Yolyn, but also associated families, including Bee, Challnor, Edwards, Guthrie, Jennings and Lingard, and associated properties, including Cilhendre, Plas Warren and Soddyll (later Sodylt). Also photocopies of deeds and documents, transcripts and research notes on the same families.