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.
Deeds and other documents relating to properties in Aldeley, Brymbo, Cymmer, Dudleston, Erbistock, Gresford, Gwersyllt, Iscoed, Llanbedr, Llanenddwyn, Llanddwywe, Llanfair, Llangar, Nanheudwy, Oswestry, Overton, Parseithydd, Ruabon, and Wrexham in Denbighshire, Flintshire, Merioneth and Shropshire, and to properties in London, Oxfordshire and Wiltshire.
The Plas Yolyn manuscripts, [17 cent., first ¼]-[19 cent.], comprising manuscripts and correspondence of Morgan Llwyd; correspondence and papers of Colonel John Jones, Maesygarnedd; the correspondence and papers of the family of Colonel John Jones and their associates; papers relating to the Edwards family of Cilhendre; manuscripts and papers relating to the Hanmer family; papers relating to the Morrall family of Cilhendre, Plas Yolyn, and to the sale of Plas Yolyn to William Challnor; miscellaneous manuscripts and papers. The group includes bound volumes as well as family and personal papers subsequently bound at the National Library of Wales.