Valor and extent of the Penrhyn lands made after the death of Sir Rees Griffith and upon the accession to the estate of his son Piers; death of Sir Rees Griffith and upon the accession to the estate of his son Piers; death of Sir Rees, 30 July, 1580, Piers being then under age. He became of full age 25 Sept., 1589; inquisition into lands held at Conway on 7 October. 7 October 1589