1072 - 1114 (42 years)
| Earl of Ulster John de Courcy | |
| B: | Bef 1150 |
| Somerset, England | |
| D: | Aft 1210 |
| Sir Jordan de Courcy | |
| B: | 1195 |
| Jordan Teutonicus de Courcy | |
| B: | 1161 |
| Islip, Oxfordshire, England | |
| D: | 1197 |
| Antrim County, Northern Ireland | |
| Jordan de Courcy | |
| B: | 1129 |
| Islip, Oxfordshire, England | |
| D: | 1176 |
| Grimsby, Lincolnshire, England | |
|
| Baron William de Courcy | |
| B: | 1072 |
| Somerset, England | |
| D: | 1114 |
| Somerset, England | |
| Emma de Falaise | |
| B: | 1076 |
| Somerset, England | |
| M: | 1094 |
| Somerset, England | |
| D: | 1129 |
| England | |
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.
