Idwallon ap Morgan

See Peter Bartrum, https://cadair.aber.ac.uk/dspace/bitstream/handle/2160/6516/TABLES%... (May 29, 2018; Anne Brannen, curator)

Please see Darrell Wolcott: Cynfyn ap Gwerystan, the Interim King; http://www.ancientwalesstudies.org/id209.html. (Steven Ferry, July 21, 2020.)

Please see Darrell Wolcott: The Enigmatic Elystan Glodrydd; http://www.ancientwalesstudies.org/id199.html. (Steven Ferry, August 11, 2020.)

Please see Darrell Wolcott: The Conquest of Glamorgan - Further Notes; http://www.ancientwalesstudies.org/id226.html. (Steven Ferry, August 20, 2020.)

Please see Darrell Wolcott: The Ancestry of Iestyn ap Gwrgan; http://www.ancientwalesstudies.org/id227.html. (Steven Ferry, August 21, 2020.)

Please see Darrell Wolcott: King of England Mediates Welsh Dispute; http://www.ancientwalesstudies.org/id228.html. (Steven Ferry, August 21, 2020.)

Please see Darrell Wolcott: Pedigree of Madog ap Idnerth; http://www.ancientwalesstudies.org/id267.html; [#12]. (Steven Ferry, May 16, 2021.)

Please see Darrell Wolcott: Bleddyn ap Maenyrch, King of Brycheiniog; http://www.ancientwalesstudies.org/id313.html (Steven Ferry, March 2, 2023.)

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[S2437] #4568 Welsh Genealogies, AD 300-1400 (1980), Bartrum, Peter C. (Peter Clement), (25 volumes, with supplements containing additions and corrections. [Wales]: University of Wales Press, 1980), FHL book 942.9 D2bp; FHL microfiche 6025561., vol. 1 p. 43*.

[S301] EWGT - Jesus College MS. 20 (MFU #4567), Peter C. Bartrum, (Cardiff. University of Wales Press. 1966), FHL 942.9 D2ba., p. 46.

[S2434] #2105 Heraldic Visitations of Wales and Part of the Marches Between the Years 1586 and 1613 by Lewys Dwnn (1846), Dwnn, Lewys; transcribed and edited with notes by Sir Samuel Rush Meyrick, (2 volumes. Llandovery: William Rees, 1846), FHL book 942.9 D23d; FHL microfilm 176,668., vol. 2 p. 45.

[S2420] #11886 The Golden Grove books of pedigrees (filmed 1970), (Manuscript, National Library of Wales manuscript number Castell Gorfod 7. Filmed by the Genealogical Society of Utah, 1950), FHL microfilms 104,349-104,351., book 17 p. N2041*.

[S2420] #11886 The Golden Grove books of pedigrees (filmed 1970), (Manuscript, National Library of Wales manuscript number Castell Gorfod 7. Filmed by the Genealogical Society of Utah, 1950), FHL microfilms 104,349-104,351., book 17 p. N2041.