English
Bertrada de Mainwaring
1196 - 1249 (53 years)
DeMainwaring Family
| Earliest Ancestor(s) | Sir Ralph DeMainwaring (maid. name Kt., Justice of Chester) & Amicia DeMeschines |
| Origins | About 1155, Warmingham,,Cheshire,England |
| Descendants | 1289 Descendants / 32 Generations. |