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: Owen Jones (Owain Myvyr), Richard Jones (Gwyndaf Eryri), Robert Jones (Rotherhithe), Theophilus Jones, Thomas Jones (Bardd Cloff), Thomas Jones (Esgair Ifan, Towyn), Thomas Jones (Llanrhaiadr), William Jones (Cadfan), William Jones (Brwynog), James Kearney, William Davies Leathart, Samuel Lewis (London), David Lloyd (Llanbister), John Lloyd (Wigfair), Simon Lloyd (Bala), Angharad Llwyd, Richard Llwyd (Bard of Snowdon), and Joseph Hayes Lyon.