Idnerth ap Cadwgan, Lord of Builth and Radnor

See Darrell Wolcott, the Pedigree of Cynddelw Gam, for the untangling of these lines: http://www.ancientwalesstudies.org/id94.html (March 29, 2016; Anne Brannen, curator).

Please see Darrell Wolcott: The Pedigree of Cynddelw Gam of Ystrad Alun; http://www.ancientwalesstudies.org/id94.html; [#51] [#117] [#257] [#261] (Steven Ferry, December 4, 2017.)

Please see Darrell Wolcott: Bartrum's "Pedigrees of the Welsh Tribal Patriarchs" #20 Meilyr Gryg; http://www.ancientwalesstudies.org/id190.html. (Steven Ferry, September 24, 2019.)

Please see Darrell Wolcott: The Evolution of the "Padriarc Brenin" Pedigree; http://www.ancientwalesstudies.org/id72.html. (Steven Ferry, October 3, 2019.)

Please see Darrell Wolcott: The Royal Family of Powys - The First Meilyr Gryg of Gregynog; http://www.ancientwalesstudies.org/id73.html. (Steven Ferry, November 16, 2019.)

Please see Darrell Wolcott: The Royal Family of Gwynedd - The Children of Gruffudd, Nephew of Iago; http://www.ancientwalesstudies.org/id80.html. (Steven Ferry, December 13, 2019.)

Please see Darrell Wolcott: The Royal Family of Gwynedd - Einion ap Llywarch of Carmarthenshire; http://www.ancientwalesstudies.org/id163.html. (Steven Ferry, January 21, 2020.)

Please see Darrell Wolcott: The Shropshire Walcot Family - Chart IV: Arwystli Dynasty; http://www.ancientwalesstudies.org/id95.html. (Steven Ferry, May 23, 2020.)

Please see Darrell Wolcott: The Shropshire Walcot Family - Chart V: The Buellt/Fferlys Dynasty; http://www.ancientwalesstudies.org/id96.html. (Steven Ferry, May 24, 2020.)

Please see Darrell Wolcott: Aaron Paen ap Y Paen Hen; http://www.ancientwalesstudies.org/id65.html. (Steven Ferry, July 5, 2020.)

Please see Darrell Wolcott: Welsh Claims to Ceri after 1179; http://www.ancientwalesstudies.org/id69.html. (Steven Ferry, July 6, 2020.)

Please see Darrell Wolcott: Trahaearn ap Caradog of Arwystli; http://www.ancientwalesstudies.org/id68.html. (Steven Ferry, July 7, 2020.)

Please see Darrell Wolcott: Cadafael Ynfyd of Cydewain; http://www.ancientwalesstudies.org/id150.html. (Steven Ferry, July 10, 2020.)

Please see Darrell Wolcott: Cadwgan of Nannau; http://www.ancientwalesstudies.org/id66.html. (Steven Ferry, July 16, 2020.)

Please see Darrell Wolcott: Owain Brogyntyn and His Family; http://www.ancientwalesstudies.org/id224.html. (Steven Ferry, July 28, 2020.)

Please see Darrell Wolcott: The Unofficial "History" of Elystan of Powys; http://www.ancientwalesstudies.org/id230.html. (Steven Ferry, August 12, 2020.)

Please see Darrell Wolcott: Trahaearn Goch of Lleyn; http://www.ancientwalesstudies.org/id119.html. (Steven Ferry, August 18, 2020)

Please see Darrel Wolcott: The Family of Trahaearn ap Caradog; http://www.ancientwalesstudies.org/id240.html. (Steven Ferry, August 29, 2020.)

Please see Darrell Wolcott: The Children of Lord Rhys; http://www.ancientwalesstudies.org/id187.html. (Steven Ferry, September 15, 2020.)

Please see Darrell Wolcott: Selyf, "Brennin" Dyfed; http://www.ancientwalesstudies.org/id261.html. (Steven Ferry, March 18, 2021.)

Please see Darrell Wolcott: Pedigree of Madog ap Idnerth; http://www.ancientwalesstudies.org/id267.html; [#1;32;55;67;90;102;104;107;108;116]. (Steven Ferry, June 21, 2021.)

Please see Darrell Wolcott: Madog Danwr, Lord of Llangurig Parish; http://www.ancientwalesstudies.org/id285.html. (Steven Ferry, November 19, 2021.)

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Sources

1. A Genealogical and Heraldic Dictionary of the Landed Gentry of Great Britain and Ireland, Volume 1 (Google eBook) Sir Bernard Burke Harrison, 1862 - Heraldry - 1759 pages. Page 349

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