A large group of personal letters to and from various members of the family of John Jenkins, including letters from him, his mother, his brothers, his wife, and his son, John Heyward Jenkins (afterwards known as John Heyward).
Letters and drafts of letters from John Jenkins to several correspondents including Walter Davies, Peter Roberts (Halkin), David Rowland (Carmarthen), Robert Saunderson (Bala), and Taliesin Williams (Taliesin Ab Iolo).
One of six volumes consisting of several hundred letters ranging in date from the late eighteenth century to about the middle of the nineteenth, and addressed mainly to Walter Davies, with some to his daughter Jane, to John Jenkins, and to John Vaughan, from numerous correspondents connected with various aspects of Welsh life and including : -- William Rees (Llandovery), W. J. Rees (Cascob), Jonathan Reynolds, (Nathan Dyfed), David Richards (Dafydd Ionawr), David Richards (Dewi Silin), T. Richards (Llangyniew), Henry Roberts (Camberwell), Dr. Griffith Roberts (Dolgelley), John Roberts (Llanbrynmair), John Roberts (Tremeirchion), Samuel Roberts (S.R.), Thomas Roberts (Llwynrhudol), L. Rowlands (Guilsfield), William Rowlands (Gwilym Lleyn), David Samwell, Robert Saunderson, Sir John Sinclair, Thomas Vowler Short (bishop of St. Asaph), Thomas Stephens, Joseph Tarn, David Thomas (Dafydd Ddu Eryri), John Thomas (Llanfyllin), John Vaughan (Penmaen Dyfi), John Waiters (Llandough), John Watton (Shrewsbury), P. Buckley Williames, D. T. Williams (Tydfylyn), Edward Williams (Iolo Morganwg), Griffith Williams (Gutyn Peris), John Williams (Plasybrain), John Williams (Llanrwst), John Williams (Ystradmeurig), Morris Williams (Nicander), Peter Williams (Llanbedrog), and Peter Bayley Williams.