Letters to unidentified recipients, mostly apparently members of the Fownes, Myddelton and FitzHugh families and households, and their representatives and associates, together with those of the Lloyd family after Rev. Thomas Lloyd moved to Plas Power in 1720; many of the letters are drafts in the hand of Mary Myddelton, and some may relate to Chirk Castle rather than Plas Power; included are a copy of a letter from an army officer north of Aberdeen, February 1715/6, to 'his ffreind att London' concerning the campaign against the Jacobites, and a letter from Captain E.W.D. Bell at Alma Heights, September 1854, concerning a recent action.