A couple years ago I posted the William Blethyn pedigree roll with the promise of transcribing it. I'm a little behind schedule in following through with that, but I would like to make an attempt to blazon the arms attributed to him.
Arms: Quarterly, 1st and 4th, Gules, three chevrons argent (Corenny hir Lydanwyn), 2nd, Azure, a chevron between three cocks combed, armed, and wattled gules (Meuric ap Tewdric), 3rd, Or, three lions passant guardant gules armed and langued azure?, a crescent dexter chief for difference gules.
Crest: Upon a wreath of gules and argent, a Paschal Lamb proper, holding between its forepaws a long cross argent from which flies a banner of the Cross of St. George."