740.1.1 = {
	liege = "d_brittany"
	holder = 159646
	law = succ_primogeniture
	law = cognatic_succession
}
857.1.1 = {
	holder = 163105
}
907.1.1 = {
	liege = 0
}
931.1.1 = {
	liege = d_brittany
}
970.1.1 = {
	liege = "d_brittany"
	holder = 340 #Conan I
	law = succ_primogeniture
	law = cognatic_succession
}
992.6.27 = {
	holder = 342 #Geoffroy I Béranger
}
1008.11.20 = {
	holder = 344 #Alain III
}
1035.1.1 = {
	holder = 346 #Eudes de Penthièvre
}
1079.1.7 = {
	holder = 350 #Geoffroy I de Penthièvre
}
1093.8.24 = {
	holder = 205744 #Étienne I de Penthièvre
}
1137.1.1 = {
	holder = 205743
}
1183.1.1 = {
	holder = 205742 #Alain I de Penthièvre
}
#Capetian house of Dreux
1214.1.1 = {
	holder = 7620 #Pierre Mauclerc
}
1237.1.1 = {
	holder = 91166 #Yolande de Bretagne
}
1272.10.10 = {
	holder = 7621 #Jean I le Roux
}
1286.10.8 = {
	holder = 455789 #Jean II
}
1305.11.18 = {
	holder = 455751 #Arthur II
}
1312.8.27 = {
	holder = 455754 #Guy de Penthièvre
}
1331.3.27 = {
	holder = 455753 #Jeanne de Penthièvre
}