A section classified as 'anomalous’ by Aneurin Owen, the model pleadings found in the Book of Cynghawsedd, and also found as part of the Iorwerth texts, gives examples of how to conduct legal cases, including sample wording.
*Charles-Edwards, T. M., ‘Cynghawsedd: Counting and Pleading in Medieval Welsh Law’, Bulletin of the Board of Celtic Studies 33 (1986), 188-198.
*Stacey, R. Chapman., ‘Learning to Plead in Medieval Welsh Law’, Studia Celtica 38 (2004), 107-124.
Wiliam, A. Rh., ‘Llyfr Cynghawsedd’, Bulletin of the Board of Celtic Studies 35 (1988), 73-85.