Conan IV, Duke of Brittany Duke of Brittany from 1156 to 1166 (1138–1171) Parents Bertha, Duchess of Brittany Alan of Penthièvre, 4rd Lord of the Honour of Richmond, 1st Earl of Richmond Children Constance, duchess of Brittany Siblings Constance of Penthièvre Eudon Alice de Porhoët Reginald (?) Partners Margaret of Huntingdon, Duchess of Brittany
