SOURCE-07047Research NeededProbable
Kirby, D. P. (1991), "The Anglo-Saxon kingdoms in the first three-quarters of th...
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Kirby, D. P. (1991), "The Anglo-Saxon kingdoms in the first three-quarters of the ninth century", The Earliest English Kings (Revised ed.), New York: Routlege (published 2000), pp. 153–157, ISBN 0-415-24211-8. Pages 153-7. Cited by Wikipedia: Merfyn_Frych Accessed 6/25/2019 jhd