A manuscript in the autograph of Roger Morris, Coed-y-talwrn containing anecdotes, extracts from the Black Book of Carmarthen ('Amravael bethau a gopiuyd or lyfyr du o gaer Vyrdin'), 'Credo Taliessin o lyvyr aral', proverbial sayings ('Ni uyr ni uyl, ni uyl ni dysc'), lines attributed to Tal Iessin ('Na fid escud dy lau ar lu anudon'), 'Kas bethau guyr Rhufain', one or two triads, two Welsh religious plays (not one as suggested in R.W.M), viz. ['Y Dioddefaint'], pp. 41-73, and 'Traul y 3 brenin i anrhegu Crist' [or 'Y Tri Brenin o Gwlen'], pp .73-80 (see Gwenan Jones, A Study of three Welsh religious plays (Bala, 1939) p. 12 et passim), some pedigrees ('Rhai or Guehelaethau'), 'Araeth Wgon', instructions concerning table manners ('Am voes ac arver yu hynn o ymdidan'), 'Henue 15 luyth Guyned o lyfr Humphre ap hoel o Ruthyn',etc., a Life of Saint Martin in Welsh [cf. Mostyn MS 88], an anecdote concerning Madog ab Owain Gwynedd, 'Henuae Pympthegluyth Guyned ai gulad ai harvau' and a list of Welsh poets.