1240 - 1271 (30 years)| Name | Isabel de Clare [1] | |
| Title | Marchioness of Montferrat | |
| Birth | May 1240 | Tonbridge, Kent, England  |
| Gender | Female | |
| Death | 1271 | |
| Person ID | I8009 | A Tree Called Smith |
| Last Modified | 21 Jul 2025 | |
| Father | Eighth Earl of Clare, Sixth Earl of Hertford, 6th Earl of Gloucester Richard de Clare, IV, b. 4 Aug 1222, England d. 14 Jul 1262, Waltham, Kent, England (Age 39 years) | |
| Relationship | natural | |
| Mother | Maud de Lacy, b. 25 Jan 1223, Lincoln, Lincolnshire, England d. 10 Mar 1289, Lincoln, Lincolnshire, England (Age 66 years) | |
| Relationship | natural | |
| Marriage | 2 Feb 1238 | |
| Family ID | F7461 | Group Sheet | Family Chart |
| Family | Marquess of Montferrat William, VII | |
| Family ID | F136 | Group Sheet | Family Chart |
| Last Modified | 21 Jul 2025 | |
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