The poem is based on the version in the British Museum 52 Addl 31055 MS. The text itself is actually derived a microfiche copy of the MS though I have also referred to Ifor Williams' Canu Llywarch Hen to correct errors in the text and to break the poem into sectons and 'voices'. It should be noted that this poem forms part of the Llywarch Hen Cycle of poems. I have attempted to replicate the original orthography as closely as I can; though as an 17th century copy this MS is closer to modern orthography than many other mauscripts given on this site.