A volume of 'cywyddau', etc. transcribed by W[illiam] H[enry] Mounsey in 1859 from manuscripts in the British Museum ('Barddoniaeth sef Casgliad O Waith Beirdd Cymru. Tynwyd allan y Casgiad hwn O Ysgriflyfrau yn yr Amgueddfa Brydeinig Genyf fi, Wiliam Henri Mounsey O Gaerliwelyd [sic] yn Sir Cwmberland. 1859'), together with annotations by D. Silvan Evans. The poets represented are Iolo Goch, Llywelyn Moel y Pantri, Gruffydd Gryg, Iorwerth Cyriog, Gutto'r Glyn, Iorwerth Vynglwyd, Lewis Morganwg, Sefnyn, Sippyn Cyfeiliog, Syr D[afydd] Trefor, Robin Ddu ('hynaf, o Fôn'), Rhys Goch Eryri, Doctor Sion Cent, Rhys Brydydd, Llawdden, Dafydd Nanmor, Dafydd ap Edmwnt, Guttyn Owain, Deio ap Ieuan Du, Llewelyn ap Guttyn, Gruffydd Hiraethog, William Cynwal, Sion Tudur, William Lleyn, Morus Kyffin, Mredydd ap Rhys, Robert Dai Llwyd and Sion Gruffudd ('o Llanddyfnan'). There is a list of contents ('Cynnwysiad') at the beginning of the volume. Among the illustrations and cut-outs mounted on the fly-leaves and in blank spaces in the manuscript are engravings of Montgomery Castle, the Fall of the Ogwen, Conway Tubular Bridge and Castle, Llyn Idwall, Rhaiadr Du near Tan y Bwlch, Moel y Gest, Denbigh, Snowden [sic] and Llanberis Lake, Valle Cruces Abbey and Pont Aberglaslyn. The spine is lettered 'Casgliad o Waith Beirdd Cymru. W. H. Mounsey. 1859'.