The original manuscript of an article entitled 'Philistiaeth yng Nghymru' (emended from 'Philistiaeth Lenyddol Cymru') by the Reverend William Richard Jones ('Goleufryn'), published in Y Geninen, 1885, pp. 275-83, under the pseudonym of 'Siluriad', together with the manuscripts of a lengthy footnote by the editor, John Thomas ('Eifionydd'), and five holograph letters, 1890, from 'Eifionydd' to 'Goleufryn' relating thereto; a holograph letter, 1887, from the Reverend J. C. Jones, Mankato, Minnesota, U.S.A., to W. R. Jones ('Goleufryn') (a preaching engagement); a holograph letter, 1904, from [O. G. Owen] ('Alafon'), Cwmyglo, to Mrs. Jones, wife of 'Goleufryn', relating to a contribution to the writer's edition of Gweithiau Llenyddol Goleufryn (Caernarfon, 1904); and a holograph poem ('Cywydd: 'Tylodi'') by 'Alafon'.