Notes:

Clémence d'Aquitaine (1060 - 4 January 1142) was a daughter of Pierre-Guillaume VII, duke of Aquitaine, and his wife Ermesinde.

She married firstly around 1075 to Conrad I of Luxembourg (1040 † 1086), count of Luxembourg, and had:

Henri III († 1086), comte à Luxembourg
Konrad, cité en 1080
Mathilde (1070 † ), married Godefroy (1075 † ), comte de Bleisgau
Rodolphe († 1099), abbot of Saint-Vannes at Verdun
Ermesinde (1075 † 1143), married
in 1096 to Albert II († 1098), count of Egisheim and of Dagsbourg,
in 1101 to Godefroy (1067 † 1139), count of Namur
William I (1081 † 1131), count of Luxembourg

Widowed, she remarried to Gerard I († 1129), count of Wassenberg and of Guelders. This count married twice and had two children, neither of whose mothers has been identified. These two children, perhaps born to Clémence, were :

Yolande, married around 1107 to Baldwin III († 1120), count of Hainaut, then to Godefroy de Bouchain, vicomte of Valenciennes
Gérard II († 1131), count of Guelders and of Wassenberg.

Clementia married Conrad, I Count of Luxembourg Abt 1075. Conrad (son of Giselbert of Luxembourg and Unknown) was born Abt 1040; died 08 Aug 1086. [Group Sheet]

Ermesinda — Godfrey, I of Namur. [Group Sheet]

Notes:

Alice of Namur was the wife of Baldwin IV, Count of Hainault. Her son was the heir of Namur when her brother Henry IV of Luxembourg died childless in 1196. Her parents were Godfrey I of Namur and Ermesinda the daughter of Conrad I of Luxembourg.

Her children with Baldwin IV of Hainaut were:

Yolande (1131-1202), wife of Hugh IV Count of St Pol
Baldwin (1134-1147)
Agnes (1142-1168)
Geoffrey, Count of Ostervant (1147-1163)
William, married Mahaut de Lalaing
Lauretta (1150-1181), wife of Bouchard IV Count of Montmorency
Baldwin V, Count of Hainaut (1150-1195), later Count of Flanders by marriage to Margaret I of Flanders

Alice — Baldwin, IV Count of Hainaut. Baldwin (son of Baldwin, III Count of Hainaut and Yolande of Guelders) was born 1108; died 08 Nov 1171. [Group Sheet]

Notes:

Baldwin V of Hainaut (1150 - 17 December 1195) was count of Hainaut (1171-1195), count of Flanders as Baldwin VIII (1191-1195) and margrave of Namur as Baldwin I (1189-1195).

History

He was the son of Baldwin IV, Count of Hainaut. Flanders was acquired via his marriage to Margaret I of Flanders in 1169. Namur was acquired from his mother Alice of Namur.

Family

With Margaret, Baldwin had the following issue:

Isabelle of Hainaut (Valenciennes, April 1170 - 15 March 1190, Paris), married king Philip II of France
Baldwin VI of Hainaut (1171-1205), also count of Flanders and Latin Emperor
Yolanda of Flanders (1175-1219), married Peter II of Courtenay, Latin Emperor
Philip I, Marquis of Namur (1175-1212)
Henry of Flanders (1176-1216), Latin Emperor
Sybille of Hainault (1179 - 9 January 1217), married c. 1197 Guichard IV, Sire de Beaujeu (d. 1216)
Eustace of Hainault (d. 1219), regent of the Kingdom of Thessalonica
Godfrey of Hainault

Baldwin married Margaret, I Countess of Flanders 1169. Margaret (daughter of Thierry, Count of Flanders and Sibylla of Anjou) died 15 Nov 1194. [Group Sheet]