| Birth |
1311 |
Of, Walwyns Castle, Pembrokeshire, Wales |
| Died |
17 Aug 1390 |
St Briavels Castle, Chepstow, Gloucestershire, England |
| |
| Family 1 |
Joan de Carew, b. 1320, Carew Castle, Pembrokeshire, Wales |
| Married |
1330 |
Pembrokeshire, Wales |
| Children |
| | 1. Jane Brienne, b. 1337, Holway, Taunton, Devon, England |
| | 2. Elizabeth de Brienne, b. 1338, Laugharne, Carmarthenshire, Wales |
| | 3. Margaret de Brienne, b. 1340, Walwyn's Castle, Haverfordwest, Pembrokeshire, Wales |
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| |
| Family 2 |
Elizabeth Montagu (maid. name 1), b. 1327, Donyatt, Somerset, England |
| Married |
10 Jul 1350 |
| Children |
| | 1. Guy IX de Brienne (maid. name of Laugharne), b. 1350, Laugharne, Carmarthenshire, Wales |
| | 2. Phillipe de Brienne, b. Abt 1355, Walwyn's Castle, Haverfordwest, Pembrokeshire, Wales |
| + | 3. William de Brienne (maid. name of Kemsing & Seale, Sir), b. 1359, Walwyn Castle, Haverfordwest, Pembrokeshire, Wales |
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