Guyomarch IV de Léon

• 
• Deceased on May 27, 1179

Parents

• Hervé II de Léon, Le Grand ( - 1169), chevalier, Earl of Wiltshire
• Sybille de Blois

Family

• Married in 1160, with Nobilis du Faou, issuing
  • Ennoguen
  • Hervé Ier ( - 1208)
  • Éléonore (1165 - )
  • Guyomarch V ( - c. 1210)