| Name | Alphonso | |
| Suffix | Earl of Chester | |
| Birth | 24 Nov 1273 | |
| Gender | Male | |
| Death | 19 Aug 1284 | predeceased his father, buried in Westminster Abbey. |
| Person ID | I322324186502 | Hurst Improbable Family Tree |
| Last Modified | 11 Feb 2022 | |
| Father | Edward I, King of England, b. 1239 d. 7 Jul 1307 (Age 68 years) | |
| Mother | Eleanor, of Castile, Countess of Ponthieu, Countess of Montreuil, b. 1241, Burgos, Spain d. 28 Nov 1290 (Age 49 years) | |
| Family ID | F3637 | Group Sheet | Family Chart |