Latin prologue to an 84-year cycle, probably written in the late 4th century and preserved in manuscripts (ultimately) of Irish provenance or Irish affiliations. Cummian, in his Paschal letter, may be drawing on this text when he discusses the lunar limits for the Passion, Burial and Resurrection of Christ. It has been suggested that the prologue may be the ‘heretical’ computistical treatise to which Bede refers in his letter to Plegwin.
Oxford, Bodleian Library, MS Digby 63
rubric: Tractatus de Creatione et de annis ab origine mundi; item, de celebratione Paschae; ad quendam Vitalem inscriptus incipit: Cum magna nime [sic] inpulsarer et cogitaciones accederent, animo meo inquirere annos et tempora creature. This copy was begun by the main hand on ff. 81-83 and completed by another, anonymous hand on ff. 83-87.
f. 81r–f. 87v