Bef 1150 - Aft 1210 (> 62 years)| Name | John de Courcy | |
| Title | Earl of Ulster | |
| Birth | Bef 1150 | Somerset, England  |
| Gender | Male | |
| Death | Aft 1210 | |
| Person ID | I3597 | A Tree Called Smith |
| Last Modified | 21 Jul 2025 | |
| Father | Jordan de Courcy, b. 1129, Islip, Oxfordshire, England d. 1176, Grimsby, Lincolnshire, England (Age 47 years) | |
| Relationship | natural | |
| Family ID | F13961 | Group Sheet | Family Chart |
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