1121 - 1170 (49 years)
| 4th Earl of Oxford Hugh de Vere | |
| B: | Abt 1185 |
| Essex, England | |
| D: | 23 Dec 1263 |
| Essex, England | |
| Hawise de Quincy | |
| B: | 1178 |
| Winchester, Hampshire, England | |
| M: | 11 Feb 1222 |
| Winchester, Hampshire, England | |
| D: | 3 Feb 1263 |
| Earls Colne, Essex, England | |
| 3rd Earl of Oxford Robert de Vere | |
| B: | 1164 |
| Colne Engaine, Essex, England | |
| D: | 25 Oct 1221 |
| Colne Engaine, Essex, England | |
| Isabel de Bolebec | |
| B: | 1165 |
| Whitchurch, Buckinghamshire, England | |
| M: | 1183 |
| Hatfield Broad Oak, Essex, England | |
| D: | 4 Feb 1245 |
| Oxford, Oxfordshire, England | |
| Countess of Oxford Agnes of Essex | |
| B: | Abt 1140 |
| Rayleigh, Essex, England | |
| D: | Abt 1200 |
| Oxfordshire, England | |
| 1st Earl of Oxford Aubrey de Vere | |
| B: | 1115 |
| Essex, England | |
| M: | 1162 |
| Hatfield Broad Oak, Essex, England | |
| D: | 26 Dec 1194 |
| London, England | |
|
| Lord of Rayleigh and Haughley Henry de Essex | |
| B: | 1121 |
| Rayleigh, Essex, England | |
| D: | 1170 |
| Reading, Berkshire, England | |
| Cicely de essex | |
| B: | 1121 |
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.
