Family: John Clayton / Mary Mainwaring (F521)
m. 1440
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Thomas Clayton (1390-1426)
|
Dorothy Thelwell (1390-1426) |
| William Mainwaring (1366-1420)
|
| Margaret de Warenne (1378-1452) |
| John Clayton (1419-1460)
|
| Mary Mainwaring (1419-1445)
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Thomas Clayton (1440-1470)  |