House of Flanders

The House of Flanders, also called the Baldwins (Balduini, Baudouinides), was a medieval ruling family of Frankish origin that was founded by Baldwin Iron Arm, son-in-law of Charles the Bald. The House of Flanders was the first dynasty to transform a county function of the Carolingian Empire into a hereditary fiefdom, the County of Flanders, falling under West Francia, created by the Treaty of Verdun in 843.

From 1051, the House of Flanders also reigned over the County of Hainaut, with Baldwin I of Hainaut. In 1119, on the death of Baldwin VII, the family had a series of setbacks, but in 1191, the family recovered the title of Count of Flanders with Baldwin VIII (Baldwin V of Hainaut).

The dynasty established the Latin Empire of Constantinople during the Fourth Crusade, and it also briefly ruled the County of Namur (1188–1212). The House of Flanders became extinct in 1280 with the death of Margaret II.

A cadet branch, the House of Boulogne, ruled over the County of Boulogne. Members of this house joined the First Crusade, established the Kingdom of Jerusalem, and produced its first kings.

Genealogy

 * Blason Flandre ancien.svg Baldwin Iron Arm, Count of Flanders († 879)
 * Blason Flandre ancien.svg Baldwin II the Bald, Count of Flanders († 918)
 * Blason Flandre ancien.svg Arnulf I the Great, Count of Flanders († 965)
 * Elftrude, born circa 932, married in 964 to Blason_ville_fr_Guines_(PDC).png Siegfried, Count of Guînes († 965)
 * Hildegarde (934 † 990), married in 943 to Counts of Holland Arms.svg Dirk II, Count of Holland (930 † 988)
 * Egbert (937 † 953)
 * Liutgarde (938 † 964), married in 950 to Wichmann IV, Count of Hamaland and Ghent.
 * Blason Flandre ancien.svg Baldwin III, Count of Flanders († 962)
 * Blason Flandre ancien.svg Arnulf II, Count of Flanders († 988)
 * Mathilda († 995 or before)
 * Blason Flandre ancien.svg Baldwin IV the Bearded (v.980 † 1035), Count of Flanders († 1035)
 * Blason Flandre ancien.svg Baldwin V of Lille, Count of Flanders († 1067)
 * Blason Flandre ancien.svg Blason fr Hainaut ancien.svg Baldwin VI the Good, (1030 - 1070), Count of Flanders and of Hainaut
 * Blason Flandre ancien.svg Blason fr Hainaut ancien.svg Arnulf III of Flanders (1055 † 1071), Count of Flanders and Hainaut
 * Blason fr Hainaut ancien.svg Baldwin II of Hainaut (1056 † 1098), Count of Hainaut
 * Blason fr Hainaut ancien.svg Baldwin III of Hainaut (1088 † 1120), Count of Hainaut
 * Blason fr Hainaut ancien.svg Baldwin IV the Builder (1108 † 1171), Count of Hainaut
 * Agnes of Hainaut, married Blason_Coucy-le-Chateau.svg Ralph I, Lord of Coucy
 * Blason fr Hainaut ancien.svg Baldwin V of Hainaut (1150 † 1195), Count of Hainaut
 * Isabella of Hainault (°1170- †1190), married Blason pays fr FranceAncien.svg Philip II of France
 * Blason Empire Latin de Constantinople.svg Blason comte-des-Flandres.svg Blason fr Hainaut ancien.svg Baldwin VI of Hainaut (°1171- †1205), Count of Flanders and Hainaut, Latin Emperor of Constantinople
 * Blason comte-des-Flandres.svg Blason fr Hainaut ancien.svg Joan (1199-1200 † 1244), Countess of Flanders and of Hainaut
 * Blason comte-des-Flandres.svg Blason fr Hainaut ancien.svg Margaret II (c. 1202 † 1280), Countess of Flanders and of Hainaut
 * Yolanda (°1175- †1219), married Blason Empire Latin de Constantinople.svg Peter II of Courtenay, Latin Emperor of Constantinople
 * Namur Arms.svg Philip the Noble, Marquis of Namur (°1175- †1212)
 * Blason Empire Latin de Constantinople.svg Henry (°1176- †1216), Latin Emperor of Constantinople
 * Sybille (°1179- †1217), married to Blason_ville_fr_Beaujeu_(Rh%C3%B4ne).svg Guichard IV, Sire of Beaujeu
 * Fessaloniki.png Eustace (†1217), regent of the Kingdom of Thessalonica
 * Matilda (1032 - 1083), married in 1053 to Blason Duché de Normandie.svg William the Conqueror
 * Blason Flandre ancien.svg Robert the Frisian, (1033 - 1093), Count of Flanders from 1071 to 1093
 * Blason Flandre ancien.svg Robert II, Count of Flanders from 1093 to 1111
 * Blason Flandre ancien.svg Baldwin VII (1093-1119), Count of Flanders
 * Guillaume (1094-1109)
 * Philip (1095-) (died young)
 * Adela of Flanders († 1115), married firstly Ancien blason Danemark.svg Canute IV of Denmark. Married secondly Coat of Arms of Robert Guiscard.svg Roger Borsa, Duke of Apulia.
 * Blason Flandre ancien.svg Charles I, Count of Flanders (1084 – 1127)
 * Gertrude (1080 - † 1117), married to Henry III († 1095) Count of Louvain and Brussels, then in 1096 to Theodoric II, Duke of Lorraine († 1115).
 * Philip of Loo, whose illegitimate son William of Ypres was a claimant to the county of Flanders.
 * Ogive, abbess of Mesen.
 * Judith of Flanders, Countess of Northumbria (1037 † 1094), married in 1058 to Tostig Godwinson († 1066), Earl of Northumbria, then in 1071 to Welf I, Duke of Bavaria († 1101)
 * Blason comté fr Boulogne.svg Adelolf († 933), Count of Boulogne
 * Blason comté fr Boulogne.svg Arnulf II († 971), Count of Boulogne
 * Blason comté fr Boulogne.svg Arnulf III († 990), Count of Boulogne
 * Blason comté fr Boulogne.svg Baldwin II († 1025), Count of Boulogne
 * Blason comté fr Boulogne.svg Eustace I (v. 995 † 1049), Count of Boulogne
 * Blason comté fr Boulogne.svg Eustace II († 1087), Count of Boulogne
 * Blason comté fr Boulogne.svg Eustace III, Count of Boulogne (1056 † 1125)
 * Matilda I, Countess of Boulogne (1105 † 1152), married in 1125 to Stephen of England
 * Godfrey of Bouillon (1058 † 1099), Duke of Lower Lorraine, a leader of the First Crusade and "Advocate of the Holy Sepulchre"
 * Blason Royaume de Jérusalem.svg Baldwin I of Jerusalem (1065 † 1118), accompanied his brother to the Holy Land, became Count of Edessa and then King of Jerusalem
 * Godfrey († 1095), Bishop of Paris
 * Lambert II, Count of Lens († 1054)
 * Gerberge († 1049), married Frederick, Duke of Lower Lorraine (1003 † 1065)
 * Arnulf IV, Count of Ternois