| Name | Constance (de Montcada) [1] | |
| Suffix | suo jure Viscountess of Marsan | |
| Gender | Female | |
| Died | circa 1299 [1] | |
| Person ID | I644 | British Peerage & Gentry |
| Last Modified | 3 Aug. 2018 | |
| Father | Gaston VII (de Montcada), Viscount of Bearn | |
| Family ID | F346 | Group Sheet | Family Chart |
| Family 1 | Alfonso (Barcelona), Infant of Aragon | |
| Last Modified | 3 Aug. 2018 | |
| Family ID | F347 | Group Sheet | Family Chart |
| Family 2 | Henry (Plantagenet), b. 2 Nov. 1235, d. 13 March 1271, Viterbo, Italy | |
| Married | circa 1269 [1] | |
| Last Modified | 3 Aug. 2018 | |
| Family ID | F345 | Group Sheet | Family Chart |
| Sources |
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