Nielsen Hayden genealogy
Gwerystan
Abt 955 --
Name Gwerystan [1, 2] Birth Abt 955 [3] Gender Male Person ID I29486 Ancestry of PNH, TNH, and others | Ancestor of AP, Ancestor of AW, Ancestor of DDB, Ancestor of DGH, Ancestor of DK, Ancestor of EK, Ancestor of GFS, Ancestor of JMF, Ancestor of JTS, Ancestor of LD, Ancestor of LDN, Ancestor of LMW, Ancestor of TNH Last Modified 24 Dec 2023
Children + 1. Elinor ferch Gwerystan, b. of Powys, Wales + 2. Lleuci ferch Gwerystan, b. Abt 980 + 3. Cynfyn ap Gwerystan, b. Abt 1000 Family ID F17582 Group Sheet | Family Chart Last Modified 24 Dec 2023
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Notes - It is possible that "Gwerystan" was a derivative of the English "Werestan."
Boyer calls him "Gwerystan ap Gwaithfoed", making him a son of "Gwaithfoed of Powys", "who was said to be perhaps the same as Casanauth Wledig", born "say 930". Darrell Wolcott shows him in the second chart in "The Clan of Tudor Trevor" (citation details below), son of a father named Gwaithfoed who is given as dying in around 915. On the other hand, Stewart Baldwin, who regards this Gwerystan's existence as plausible because his name appears in plausible sources as the patronym of his son Cynfyn, dismisses earlier generations of his pedigree.
- It is possible that "Gwerystan" was a derivative of the English "Werestan."
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Sources - [S885] Stewart Baldwin, Llywelyn ap Iorwerth ancestor table.
- [S3215] Medieval Welsh Ancestors of Certain Americans by Carl Boyer III. Santa Clarita, California, 2004.
- [S7044] Darrell Wolcott, "The Clan of Tudor Trevor" at Ancient Wales Studies.
- [S885] Stewart Baldwin, Llywelyn ap Iorwerth ancestor table.