Jean Ier de Joigny

• 
• Born circa 1250
• Killed in 1283, at the approximate age of 32 years

Parents

• Guillaume III de Joigny (c. 1230 - c. 1261), chevalier, comte de Joigny, participant à la huitième croisade
• Agnès de Châteauvillain

Family

• Married with Marie de Mercœur, issuing
  • Jeanne
  • Robert ( - 1326)
  • Jean II (c. 1280 - 1324)
  • Isabelle (c. 1285 - c. 1297)