

See Peter Bartrum, http://cadair.aber.ac.uk/dspace/bitstream/handle/2160/5573/Bleddyn%... (December 26, 2016; Anne Brannen, curator)
Source: Our Royal Titled Noble and Commoner Ancestors
Margaret, wife of Sir John de Arderne was the daughter of Griffin, or Gruffydd ap Madog, the last Prince of Powys-Vadog, Lord of Bromfield and the Castle of Dinas Bran, near Llangollen. Her grandfather, Madog, was the founder of Valle Crucis Abbey, and his wife Emma, was the daughter of Henry Lord de Audley, the founder of Hilton Abbey. Three of her brothers died issueless, two being said to have perished when they were infants. Their alleged murders were bitterly revenged by the descendant of the third, Owen Glendower.
~Ormerod's Parentalia, p. 84
1247 |
1247
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Bromfield, Somerset, England, Great Britain
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1261 |
1261
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Powys, Montgomeryshire, Wales
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1297 |
1297
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Aldford, Cheshire, England
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1300 |
1300
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Probably Aldford and Alvanley, Cheshire, England
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1304 |
1304
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Aldford, Cheshire, England
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1314 |
June 3, 1314
Age 53
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of Aldford, Cheshire, England
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Also Of Griffithstown, Monmouthshire, (Wales), England
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Also Of Griffithstown, Monmouthshire, (Wales), England
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