Family: Reginald de Brewes / Wentelina Gwladus Princess North wales, "du" (F1979)
m. 1215Llewelyn of North Llewelyn, Prince of Wales (1173-1240) 
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Princess Joan of England (1188-1237)
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Gladys Dhu Verch Llewelyn (1194-1251)  |
| Helen Princess of North wales (1206-1253) |
| Helen Verch Llewelyn (1206-1253) |
| Margred Verch Llewelyn (1206- ) |
| Dafydd Prince of North wales (1209-1246) |
| Margaret Princess of North wales (1210- ) |
| Reginald de Brewes (1197- ) |
| Wentelina Gwladus Princess North wales, "du" (1205-1251)
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