He published his first collection of hymns, Golwg o Ben Nebo, ar Wlad yr Addewid, from Farley's press, Bristol, in 1755, and this was followed by Cascliad o Hymau [sic] (Carmarthen, 1757) and Casgliad o Hymnau, etc. (R. Thomas, Carmarthen, 1760); Golwg o Ben Nebo (2nd imp., Thomas, Carmarthen, 1764); Golwg ar Ddull y Byd, etc., 1767; Golwg ar Ddinas Noddfa (which includes an elegy on the death of Ester Siôn of Llansawel), 1770; Griddfanau'r Credadyn, 1772; Griddfanau Credadyn (a different book) c. 1774; Y Frwydr Ysprydol (jointly with Thomas Dafydd), c. 1772-4; and Golwg o Ben Nebo (3rd imp., Ross, Carmarthen, 1775). He also published a number of elegies: Marw-Nad: … Lewis Lewis … Llanddeiniol (which includes some hymns), 1764; Marwnad … rhai o Weinidogion ffyddlon yr Efengyl (Howell Davies, William Richard, and Siôn Parry), 1770; and Hanes Byr o Fywyd … Morgan Nathan, yn Llandilo-fawr (including hymns by Morgan Rhys and M. Nathan), 1775. His hymns are characterized by profound spiritual experience, and he always gives a prominent place to the person of Christ. Examples of his work are to be found in every collection of Welsh hymns.
Rev. Gomer Morgan Roberts, M.A., (1904-93), Pont-rhyd-y-fen / St Dogmael's / Llandybïe