Nielsen Hayden genealogy
Margred ferch Einion ap Seissyll
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Name Margred ferch Einion ap Seissyll [1] Gender Female Person ID I29554 Ancestry of PNH, TNH, and others | Ancestor of TWK Last Modified 12 Aug 2020
Family Owain Brogyntyn ap Madog ap Maredudd ap Bleddyn, King of Powys Children + 1. Gruffudd ab Owain Brogyntyn ap Madog ap Maredudd Family ID F17627 Group Sheet | Family Chart Last Modified 12 Aug 2020
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Sources - [S3215] Medieval Welsh Ancestors of Certain Americans by Carl Boyer III. Santa Clarita, California, 2004.
- [S3215] Medieval Welsh Ancestors of Certain Americans by Carl Boyer III. Santa Clarita, California, 2004.