 Male1st Earl of Pembroke William Marshall, the Elder |
| Birth | 12 May 1146 | Pembrokeshire, Wales  |
| Death | 14 May 1219 | Caversham, Oxfordshire, England |
| Burial | Temple Church, London, England |
|
| Marriage | Aug 1189 | Tower of London, London, England |
| Father | ||
| Mother | ||
 Female4th Countess of Pembroke Isabella de Clare |
| Birth | Feb 1172 | Pembroke, Pembrokeshire, Wales |
| Death | 14 May 1220 | Pembroke, Pembrokeshire, Wales |
| Burial | ||
| Father | 2nd Earl of Pembroke, Lord of Leinster, and Justiciar of Ireland Richard FitzGilbert de Clare | F3356 Group Sheet | |
| Mother | Princess of Leinster Aoife 'Eve' MacMurrough | F3356 Group Sheet | |
| Female Sibyl Marshall |
| Birth | 1209 | Pembroke, Pembrokeshire, Wales |
| Death | 27 Apr 1245 | Pembroke, Pembrokeshire, Wales |
| Burial | ||
| Spouse | 5th Earl of Derby Sir William de Ferrers, III | F5226 | |
| Marriage | ||
 FemaleCountess of Cornwall Isabel Marshall |
| Birth | 9 Oct 1200 | Pembroke, Pembrokeshire, Wales |
| Death | 17 Jan 1240 | Hertfordshire, England |
| Burial | Hampshire, England |
|
| Spouse | 1st Earl of Cornwall Richard Plantagenet | F7499 | |
| Marriage | 30 Mar 1231 | Buckinghamshire, England |
| Spouse | 4th Earl of Hertford and 5th Earl of Gloucester Gilbert de Clare, III | F7480 | |
| Marriage | 9 Oct 1217 | |
| Weddings |  | Wedding of Isabel de Clare and William Marshall Tower of London |
We make every effort to document our research. There is a lot of information that I do not have, and I know there are mistakes in this tree. My feelings will not be hurt if you give me corrections or additional information, especially if you can provide sources for the information.
