Prince Pierre I de France, sn de Courtenay, de Tanlay, de Champignelles, etc, *1126, +Palestine 1179/10.4.1183 !dwid!; m.1150/55 Elizabeth de Joinville, Dame de Courtenay (*Courtenay 1127, +after 14.9.1205) dau.of Renaud de Courtenay; they had issue:

0.      A1. Cte Pierre II de Courtenay 1193, Cte de Nevers, d'Auxerre et de Tonnerre 1184, Emperor of Constantinople (1216-19), Marquis de Namur, *1155, +Epirus after VI.1219; By his second marriage, he was called upon in 1217 to succeed to the Latin Empire of the Orient, created following the capture of Constantinople in the course of the Fourth Crusade. But on the way to his Empire, he was victim of a Greek ambush. Baudouin tried to engage the fief of Courtenay to Villehardouin, but King Louis IX objected. However, his son Philippe was able to engage the Venetians. Later, through marriage, Courtenay was reunited with the Crown, after a possession by the King of Castile; 1m: 1184 Cts Agnes de Nevers, d'Auxerre et de Tonnerre (*1170 +1192) dau.of Cte Guy I de Nevers and Mathilde de Bourgogne; 2m: Soissons 1.7.1193 Mgvne Yolande of Namur (*1175 +1219) dau.of Ct Baldwin V of Flanders and Hainaut

0.                        B1. [1m.] Mahaut de Courtenay, Cts de Nevers, d'Auxerre et de Tonnerre, *1188, +Abbaye de Fontevrault 12.10.1257, bur there; 1m: 1199 (div 1213) Hervé IV, Seigneur de Donzy; 2m: 1226 Guigues IV d'Albon, Cte de Forez (+1241)

0.                        B2. [2m.] Philippe de Courtenay, Margrave of Namur (1217-26), *1195, +k.a. St.Flour-en-Auvergne 1226, bur Abbaye de Vaucelles, Cambrai

0.                        B3. [2m.] Pierre de Courtenay, a priest, *1196, living 1212

0.                        B4. [2m.] Robert I de Courtenay, Emperor of Constantinople (1221-28), *1201, +Morea/Morée, Loir-et-Cher, France I.1228; m.1228 a dau.of Baudoin de Neufville

0.                        B5. [2m.] Henri de Courtenay, Mgve of Namur (1226-29), *1206, +1229

0.                        B6. [2m.] Baldwin de Courtenay, Emperor of Constantinople (1237-61) =Baldwin II, *Constantinople 1218, +Naples 1273, bur Barletta; m.Perugia 1229/1234 Marie de Brienne (+after 5.5.1275)

0.                                          C1. Philippe I de Courtenay, titular Emperor of Constaninople, *there 1243, +Viterbo 1283; m.Foggia 1273 Beatrix of Naples (*ca 1252 +1275)

0.                                                            D1. Catherine de Courtenay, titular Empress of Constantinople, *1274, +Paris 2.1.1307, bur there; m.1302 Cte Charles de Valois (*12.3.1270 +16.12.1325)

0.                                          C2. [parentage not certain] Helene, +1314; m.ca 1250 King Stefan Uros I of Serbia (+1280)

0.                        B7. [2m.] Marguerite, Dame de Chateauneuf-sur-Cher, Mgvne of Namur (1229-37), *1194, +17.7.1270, bur Marienthal; 1m: ca 1210 Raoul I de Lusignan, Seigneur d'Issoudun (+1216); 2m: 1216 Gf Heinrich I von Vianden (+1252)

0.                        B8. [2m.] Sibylle, a nun, *1197, +Abbey de Fontevrault V.1210

0.                        B9. [2m.] Elizabeth, *1199, +after 1269; 1m: before 1219 Cte Gaucher de Bar-sur-Seine (+1219); 2m: 1220 Eudes I de Bourgogne, sn de Montagu (*1196 +1243/7)

0.                        B10. [2m.] Yolande de Courtenay, *ca 1194, 1200, +1233, bur Egrecz Abbey; m.1215 King András II of Hungary (*1176 +21.9.1235)

0.                        B11. [2m.] Agnés, *1202, +after 1247; m.1217 Geoffroy II de Villehardouin, Pr of Achaia (+1246), son of Geoffroy de Villehardouin and Elisabeth de Troyes

0.                        B12. [2m.] Marie, *1204, +Nicea IX.1222; m.1219 Emperor Theodoros I of Nicaea (+1222)

0.                        B13. [2m.] Eléonore de Courtenay, *1208, +1230, bur Abbaye de St.Antoine-des-Champs, Paris; m.before 1220 Philippe I de Montfort-l'Amaury, sn de Castres-en-Albegeois (+17.3.1270)

0.                        B14. [2m.] Constance, a nun at Fontevrault, *1210, +Abbaye de Fontevrault after 1215, bur there

0.      A2. Robert de Courtenay, sn de Champignelles, etc, Grand Bouteillier de France; *1168, +Palestine 1239; 1m: ca 1200 Constance [possibly de Toucy]; 2m: 1216/18 Mahaut, Dame de Mehun-sur-Yevre (+1240; bur Mehun), dau.of Philippe, Seigneur de Mehun; for his descendants, see HERE

0.      A3. Guillaume I de Courtenay, sn de Tanlay, *1172, +1233/48, bur Abbaye de Quincey nr Langres; 1m: ca 1204 Adeline de Noyers, Dame de Tanlay (*1186 +1222/29; bur Abbaye de Quincey), dau.of Clarembault de Tanlay; 2m: 1229/31 Nicole N (+after 1231); all kids were by 1m. and took surname "de Tanlay"

0.                        B1. Robert I de Tanlay, sn de Tanlay, *1205, +1260; 1m: ca 1227 Marguerite (+1231/2) dau.of Guillaume I de Mello and Elizabeth, Dame d'Ancy-le-Franc; 2m: ca 1233 Marguerite, Dame de Villaines-en-Duesmois, dau.of Pierre de Ravieres; both kids were by 1m:

0.                                          C1. Jean I, sn de Tanlay, *1230, +1285, bur Abbaye de Quincey; m.ca 1257 Marguerite, Dame de Saint-Winemer (+1306) dau.of Hugues de Plancey

0.                                                            D1. Robert II, sn de Tanlay, *1260, +1310, bur Abbaye de Quincey; m.ca 1284 Agnes de Saint-Yon (+1316, bur Abbaye de Quincey)

0.                                                                              E1. Guillaume II, sn de Tanlay, *1285; m.ca 1306 Agnes de Mornay, Dame de Saint-Thierry

.                                                                                                F1. Robert III, sn de Tanlay, *1307, +1345/7; m.ca 1340 Laure (+1384, bur Abbaye de Quincey), dau.of Guillaume II de Bordeaux

.                                                                                                F2. Jean II da Tanlay, sn de Ravieres, *1308, +1342/5; m.before 23.2.1328 Odette, dau.of Guy de Pleepape

.                                                                                                F3. Philippe II, sn de Tanlay, *1320, +1383/5; m.ca 1351 Philiberte de Chateauneuf, Dame de Poisy (+after 1399)

.                                                                                                                  G1. Pierre de Tanley, *1352, +nr Bourbourg 1383

.                                                                                                                  G2. Etienne de Tanlay, sn de Ravieres, *1356, +1383; 1m: ca 1376 Jeanne, dau.of Guillaume de Marmeaux; 2m: Marguerite (+after 1385), dau.of Erard de Thianges

.                                                                                                                                    H1. Jeanne, Dame de Tanlay, *1377, +1404; 1m: after 1393 Guillaume de Blaizy (+1396); 2m: ca 1400 Robert de Chaslus

.                                                                                                                  G3. Jeanne, Dame de Poisy, *1354, +1404; 1m: 1375 Jean de Champigny (+1390); 2m: 1391/2 Hugues Postel, sn d'Ailly (+after 1415)

.                                                                                                                  G4. Alixant, Abbess of Notre-Dame at Crisenon, *1358, +after 2.5.1409

0.                                                                              E2. Philippe, Prior at Juilly-les-Nonains, *1292, +after 1315

0.                                                                              E3. Agnes, Dame de Bragelogne, *1289 +after 1315; m.before 1308 Robert de Rochefort (+after 1315)

0.                                                            D2. Etienne, sn de Tannerre, *1262 +after 1332; m.ca 1292 Madeline de Valery

0.                                                            D3. Philippe I de Tanlay, sn de Ravieres, *1264, +1300, bur Abbaye de Quincey

0.                                                            D4. Jean de Tanlay, Abbot of Quincey, *1266 +1300, bur there

0.                                                            D5. Marie, *1258, +after 1306, bur Notre-Damede-l'Isle at Troyes; m.before 1290 Guy de Montreal

0.                                          C2. Marie, *1228, +after 1281; m.Guillaume de Joinville

0.                        B2. Jean, Seigneur de Joux, *1206, +after 1248

0.                        B3. Baudoin de Tanlay, *1211, +after 1222

0.                        B4. Jeanne, *1208, +after 1250; m.ca 1225 Pierre de Coral

0.                        B5. Alix, *1209, +after 1243; m.Milon de Tonnerre

0.      A4. a daughter, *1158; m.Eudes de la Marche

0.      A5. Alix de Courtenay, *1160, +14.9.1218; 1m: ca 1178 (div 1180) Cte Guillaume I de Joigny (+1220); 2m: 1186 Cte Aymar III d'Angouleme (*ca 1160 +16.6.1202)

0.      A6. Eustachie de Courtenay, Dame de Placy-sur-Armancon, *before 1176, +after 1235; 1m: before 1189 Evrard ?/ Guillaume de Brienne, sn de Ramerupt; 2m: 1200 Guillaume I de Champlitte, Pr of Achaia (+1209/10); 3m: ca 1211 Guillaume I de Champagne, Cte de Sancerre (+1217/19)

0.      A7. Clemence de Courtenay, *before 1175; m.before 1185 Vicomte Gui VI de Thiers

0.      A8. Philippe de Courtenay, *before 1183, living 1186

0.      A9. Constance de Courtenay, Dame de Chateaufort, *1168, +after 1231; 1m: before 1188 Gasce de Poissy (+1189); 2m: ca 1190 Guillaume de Breteuil, sn de la Ferte-Arnaud

0.      A10. Isabelle de Courtenay, *before 1183, living 1194; m.Aimon III, Seigneur de Charost (+after 1221)

NOTE: There was a family called de Courtenay, seigneurs de Yerre, who descended from Jean I de Courtenay, sn de Yerre (+after 1221). Whether he was a member of this family has not been established; apparently there is no evidence one way or the other. The heiress of this line, Isabelle de Courtenay, Dame de Yerre et de Courpalay (*1370) m.Geoffroi Tout-Outre (+after 1420)