Nielsen Hayden genealogy
Ilger
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| Marmaduke de Thweng -1284 |
| Marmaduke de Thweng | |
| B: | of Kilton in Brotton, Yorkshire, England |
| D: | Between 1282 and 1284 |
Lucy de Brus -Aft 1282 |
| Lucy de Brus | |
| M: | Abt 1242 |
| D: | Aft 29 Mar 1282 |
| Robert de Thweng -1257 |
| Robert de Thweng | |
| B: | of Thwing, Bridlington, Yorkshire, England |
| M: | Bef Jan 1229 |
| D: | Between 1245 and 1257 |
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