Known as "the Freckled." "The Earliest English Kings," D. P. Kirby (London: Routledge, 1992), p. 212: "The advent to royal power in 825 of Merfyn Frych ap Gwriad, a Powys prince with possible Manx connections, whose father had married a daughter of Cynan ap Rhodri, king of Gwynedd, established the second dynasty of Gwynedd. Merfyn's marriage to Nest, sister of Cyngen ap Cadell, king of Powys, strenthened the Powysian associations of this second dynasty...."