| Érard II de Brienne C. de Brienne (1130 - 1191) |
Alfonso IX Fernandez of Léon King of Léon, Galicia & Badajoz (1171 - 1230) |
| Agnes de Montfaucon (1148 - ) |
Berenguela I "la Grande" of Castile Q. of Castile (~1179 - 1246) |
| Jean (John) I de Brienne Count of Brienne (as regent for his nephew), etc. | Bérengère of Castile-Léon |
| b. 1169/1174 d. 21 Mar 1237, Constantinople bur. occ. cen. im. . ud. |
b. 1204 d. 12 Apr 1237 bur. occ. cen. im. . ud. |
| Spouses: 1, 2, 3 |
| Alphonse de Brienne 9th C. of Eu, etc. Jean de Brienne Count of Montfort, Grand etc. Louis de Brienne Knt., etc. Marie de Brienne |