Robert Ier de Dreux

• 
• Born in 1217
• Deceased in 1264, at the approximate age of 46 years

Parents

• Robert III de Dreux, alias Gasteblé (1185 - 1234), chevalier, comte de Dreux, participant à la croisade contre les Albigeois
• Aliénor de Saint-Valery

Family

• Married with Isabelle de Villebéon, alias la Chambellane, dame de Bagneux, issuing
  • Isabelle (1264 - 1300)
  • Robert (1265 - 1306)
  • Robert II (1265 - c. 1306)
• Married with Clémence de Châteaudun, vicomtesse de Châteaudun, issuing
  • Alix