| Title | Rental of the lands of William ap Gruffith of Penrhyn in the townships of Penwynllys, Cremlyn, Pethkyr, Porthaethwy, Trevor, Pentraeth, Landdyfnan, Mathafarn Wion, Castellbwlchgwyn, Mathafarn Eitha, Penmynydd and Dinsylwy in the county of Anglesey, and in Crewerion, Bodfaio, Bangor, Iagwyrfai and Nant Conwy in the county of Caernarvon (Nov.1,1412-Nov.1, 1413). |