Material mainly in the autograph of Foulk Roberts (Eos Llyfnwy) (1774?-1870), Llanllyfni, including a copy of the certificate of his marriage at Llanberis, 6 August 1800, to Catherine Williams of Llanberis; two hymns, each entitled Hymn Nadolig Crist, by John Williams (Ioan Rhagfyr) (1740-1821); two hymns written on the death of William Foulk Roberts (d. 27 July 1839); verses, 1854, by Foulk Robert Williams (i.e. Foulk Roberts) on the new place of worship at Cwmyglo.