His poems are preserved in Pen. MS. 124, Jes. Coll. MS. 14, Llanstephan MS 167 , Cardiff MSS. 7, 23, 63, Hafod MS. 10, B.M. Add. MSS. 12230, 14991, 15015, N.L.W. MSS. 668, 2602, 6681, 8330, and Gwyneddon MS. 3. Among them are cywyddau in praise of S. Mordeyrn, saint of honour (' Sant anrhydedd ') at Nantglyn, and to S. Dyfnog, and a cywydd to God which is attributed in Pen. MS. 124 to Dafydd ap Hwlcyn ap Madog. It is uncertain whether he may be associated with the Dafydd Llewelyn who is represented by two englynion in Mostyn MS. 143.
Published date: 1959
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