| Name | Margaret CORNWALL | |
| Sex | Female | |
| Birth | 1280, Winchester, Southampton, Hampshire, England | |
| Parents | Walter Plantagenet CORNWALL II x Unknown [Family] | |
| Spouse | Jacob James James PEVERELL b. 1275 [Family] | |
| Children | 1. Hugh PEVERELL b. 1300 | |
Margaret CORNWALL, only child of Walter Plantagenet CORNWALL II [Family], was born in 1280 in Winchester, Southampton, Hampshire, England. One son listed. |
| i | Hugh PEVERELL was born in 1300 in Devon, England. |