This will be an account of the families of the early Dukes of Brittany.

Part 1.
One Nominoe, Duc de Bretagne in 826 (d.851), was father of:
   Erispoe, Duc de Bretagne 851 (murdered 857), father of:
   a daughter, who m.Gurvand, Duc de Bretagne 874 (d.877); they were parents of two kids:
1.Judicael, Cte de Rennes, Duc de Bretagne 877, k.a.888; and
2.a daughter, who m.Ct Berengar (possibly de Bayeux); for their descendants see Part 3.

Part 2.
One Salomon, a cousin of Duc Erispoe, was Duc de Bretagne 857; he was murdered 874; he had
a daughter who m. Cte Pasquitan de Vannes, who was Duc de Bretagne 874-6 and 877.
Pasquitan's brother was Alain I "le Grand", Duc de Bretagne 877 (d.907), who by his wife Oreguen
N had a daughter who m. Cte Matuedo I de Poher; they were parents of:
   Alain II "le Barbetorte, Cte de Vannes et de Nantes, Duc de Bretagne 936 (d.952); he m.943
Roscille d'Anjou; he had a legitimate son who d.young, and two illegitimate sons:
1.Cte Hoel de Nantes (d.981)
1.1.Cte Judicael de Nantes; m.Melisende N
1.1.1.Judith de Nantes, d.1053; m.Alain Cagniart, Cte de Cornuaille (see Part 4)
2.Cte Guisle de Nantes, d.988

Part 3.
Cte Berengar and N de Bretagne (see Part 1) had issue:
1.Judicael Berengar, Cte de Rennes, d.ca 970; m.Gerberge N
1.1.Conon I "le Tort", Duc de Bretagne 990, k.a.992; m.973 Ermengarde d'Anjou
1.1.1.Geoffroy, Duc de Bretagne (ca 980-1008); m.996 Havise of Normandy (d.1034)
1.1.1.1.Alain III, Duc de Bretagne, b.ca 997, d.of poisoning 1040; m.1018 Berthe de Blois
(d.1085)
1.1.1.1.1.Conon II, Duc de Bretagne, d.1066
1.1.1.1.2.Havise, heiress of Brittany, d.1072; m.Hoel de Cornuaille (see Part 4)
1.1.1.2.Evenus de Bretagne, b.ca 998, d.after 1037
1.1.1.3.Eudes de Bretagne, Cte de Penthievre, Regent of Brittany 1040-62; m.Agnes de
Cornuaille (see Part 4)
1.1.1.3.1.Geoffroy I Botterel, Cte de Penthievre, d.1093
1.1.1.3.1.1.Eudes, Cte de Porhoet, d.1095
1.1.1.3.2.Etienne I, Cte de Treguier et de Lamballe, d.1137; m.Havise de Guincamp
1.1.1.3.2.1.Geoffroy II Botterel, Cte de Penthievre, d.1148
1.1.1.3.2.1.1.Rivallon, Cte de Penthievre, d.ca 1162
1.1.1.3.2.1.1.1.Etienne II, Cte de Penthievre, d.1164
1.1.1.3.2.1.1.2.Geoffroy III Botterel, Cte de Penthievre, d.1177
1.1.1.3.2.2.Alain II, Earl of Richmond, sn de Guincamp, d.1146; m.ca 1137 Berthe de Bretagne
(see Part 4)
1.1.1.3.2.2.1.Conon IV, Duc de Bretagne (ca 1138-1171); m.1160 Margaret of Scotland (d.1201)
1.1.1.3.2.2.1.1.Constance, Dss de Bretagne (ca 1161-1201); m.1st 1181 Geoffrey of England,
Duc de Bretagne (d.1186); m.2d 1188 Ranulph de Blundeville, Earl of Chester; m.3d 1199 Guy
de Thouars, Duc de Bretagne (d.1213)
1.1.1.3.2.2.2.Constance de Bretagne, d.after 23 Jun 1184; m.Vcte Alain de Rohan
1.1.1.3.2.2.3.Enoguen de Bretagne, Abbess of St-Sulpice, Rennes, d.ca 1187
1.1.1.3.2.3.Henri, Cte de Treguier et de Guincamp, d.1190; m.1151 Matilda de Vendome
1.1.1.3.2.3.1.Henri de Penthievre, d.young
1.1.1.3.2.3.2.Alain I, Cte de Penthievre, etc. d.1212; m.1st Petronille de Beaumont; m.2d
Adelaide N; both kids were by 1st m.
1.1.1.3.2.3.2.1.Henri II, Cte de Penthievre, d.a monk at Dinan 1281; m.Marguerite de Mayenne
1.1.1.3.2.3.2.1.1.Alain d'Avaugour, Baron de Mayenne, Vcte de Dinan, b.before 1235, d.ca 1267;
m.Clemence de Dinan; they left issue of whom I have no details
1.1.1.3.2.3.2.1.2.Juhel, sn de Kergrois; m.Catherine de Leon; they left issue of whom I have no
details
1.1.1.3.2.3.2.1.3.Henri, sn de Goello; m.Phelipe de Rohan
1.1.1.3.2.3.2.1.4.Marie de Penthievre
1.1.1.3.2.3.2.2.Geoffroy, sn de Quintin, d.after 1212; he left issue of whom I have no details
1.1.1.3.2.3.3.Etienne de Penthievre
1.1.1.3.2.3.4.Conan de La Roche-Derrien, d.after 1202
1.1.1.3.2.3.4.1.Alain, d.after 1237
1.1.1.3.2.3.4.3.[illegitimate] Plaisou, d.after 1269; m.Olivier, Sire de Clisson
1.1.1.3.2.3.5.a dau., m.Conan "le Bref" de Leon
1.1.1.3.2.4.Agnorie de Penthievre; m.1135 Olivier de Dinan
1.1.1.3.2.5.Olive de Penthievre; m.1st Henri de Fougeres (d.1154); m.2d Guillaume de Saint-Jean
1.1.1.3.3.Brien de Bretagne, was given Cornwall, dsp
1.1.1.3.4.Alain "the Red", Lord of Richmond, dsp 1089
1.1.1.3.5.Alain "the Black", Lord of Richmond, dsp 1093
1.1.1.3.6.William
1.1.1.3.7.Robert
1.1.1.3.8.Richard
1.1.2.Cte Judicael de Porhoet, d.1037
1.1.3.Hurnod de Bretagne
1.1.4.Judith de Bretagne (982-1017); m.1000 Ct Richard II of Normandy
2.Poppa; m.Ct Rollo of Normandy

Part 4.
Alain Cagniart, Cte de Cornuaille, d.1058; m.Judith de Nantes (see Part 2); they had issue:
1.Hoel V, Cte de Cornuaille, de Nantes et de Leon, d.1084; m.1066 Havise de Bretagne (see Part
3)
1.1.Alain IV Fergent, Duc de Bretagne, d.1119; m.1st 1086 Constance of England (1061-1090);
m.2d ca 1093 Ermengarde d'Anjou (b.ca 1068, d.Jerusalem 1146); all kids by 2d marriage
1.1.1.Conon III "le Gros", Duc de Bretagne, d.1148; m.Maud, illegitimate dau.of King Henry I of
England
1.1.1.1.Cte Hoel VI de Nantes, d.1156
1.1.1.2.Berthe, heiress of Brittany, d.1158/64; m.1st ca 1137 Alain, Earl of Richmond (see Part 3);
m.2d 1147 Vcte Eudes de Porhoet, Duc de Bretagne (d.1170)
1.1.1.3.Constance de Bretagne, d.1148; m.Geoffroy de Mayenne (d.1169)
1.1.2.Geoffroy de Bretagne, d.Jerusalem 1116
1.1.3.Havide de Bretagne; m.1110 Ct Baldwin VII of Flanders
1.2.Mathieu, Cte de Nantes; m.Ermengarde N
1.3.Eudes de Cornuaille
1.4.Hildeberge de Cornuaille; m.Geoffroy de Mayenne (d.1099)
1.5.Adele de Cornuaille, Abbess of St-Georges
2.Agnes de Cornuaille; m.Cte Eudes de Penthievre (see Part 3)