Alphonse de Brienne

• 
• Born circa 1227
• Deceased in 1270, at the approximate age of 42 years

Parents

• Jean Ier de Brienne (c. 1175 - 1237), chevalier, empereur latin de Constantinople
• Berenguela de Castilla

Family

• Married in 1250, with Marie de Lusignan, comtesse d'Eu, issuing
  • Jean