English
Sir Ralph DeMainwaring (maid. name Kt., Justice of Chester)
1155 - 1190 (35 years)
de Mensilwarin Family
| Earliest Ancestor(s) | Roger de Mensilwarin & Ellen Roger(s) |
| Origins | About 1130, Over-Peover, Middlewich, Cheshire |
| Descendants | 1290 Descendants / 33 Generations. |
| Variant Spellings | deMensilwarin, de Mensilwarin |
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