Manuscript scores of 'Caneuon y misoedd' (set of 12 songs, one for each month of the year). Ionawr: 'Bore Calan' (January: New Year’s Day), orchestral score and two vocal scores; Chwefror: 'Lili Wen Fach' (February: The Snowdrop), orchestral score and two vocal scores; Mawrth: 'Dai Twm Dili' (March: Daffodil), orchestral score and one vocal score; Ebrill: 'Gwcw' (April: Cuckoo), orchestral score and three vocal scores; Mai: 'Daeth Clamai' (May: It’s Maytime), orchestral score, two vocal scores and one voice part; Mehefin: 'Wrth y Gwair' (June: Hay-making), orchestral score and two vocal scores; Gorffennaf: 'Gwyliau’r Haf' (July: Summer Holidays), orchestral score, one vocal score and two voice parts; Awst: 'Traeth y Pigyn' (August: On the beach), orchestral score, one vocal score and two voice parts; Medi: 'Y Wiwer' (September: The Squirrel), orchestral score and two vocal scores; Hydref: 'Dawns y Dail Crin' (October: Dance of the withered leaves); orchestral score and two vocal scores; Tachwedd: 'Hela’r Cadno' (November: Hunting the Fox), orchestral score and two vocal scores; Rhagfyr: 'Seren Nadolig' (December: Christmas Star) two orchestral scores and one vocal score. Nos 1-11 published Magor: Mansel Thomas Trust, Ref: MT029 [1998?], No 12 published Gwynn.