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Birth:          ABT 1070 of Flanders
Death:          1117 

Notes
heiress of Flanders
d 1115/1126
https://en.wikipedia.org/wiki/Theodoric_II,_Duke_of_Lorraine
https://en.wikipedia.org/wiki/Gertrude_of_Flanders,_Duchess_of_Lorraine
Gertrude of Flanders, Duchess of Lorraine (c. 1070–1117), also Countess of Louvain, 
Landgravine of Brabant until 1095, as the consort of her husbands. At the time the 
duchy was the upper Lorraine, since 959 separated from the duchy of Lower Lorraine.
Family background[edit]

Gertrude was daughter of Robert I, Count of Flanders (c. 1035–1093) and Gertrude of 
Saxony (c. 1030 – 1113). Robert was son of Baldwin V of Flanders and Adèle, a 
daughter of King Robert II of France, and Gertrude daughter of the Duke of Saxony. 
She was sister of Robert II, Count of Flanders (c. 1065 – 1111), "Robert the 
Crusader".

Marriage and children[edit]

Gertrude married firstly Henry III, Count of Leuven (died wounded in a tournament in 
Tournai in 1095), of the House of Reginar. He was count of Louvain from 1078 to 
1095 and landgrave of Brabant from 1085. At Henry's death, his brother Godfrey I 
succeeded as count and landgrave. From 1106 he also became duke of Lower 
Lorraine.

They had four children, probably all daughters (born about 1092-1096), assumingly 
including:
Adelaide (d. 1158), wife of duke Simon I of Lorraine (1076 – 1138), son of her 
stepfather Theodoric with Hedwige (d. c. 1090).
Gertrude, wife to Lambert, count of Montaigu and Clermont

Secondly in 1096 she married Theodoric II, Duke of Lorraine "Thierry" (d. 1115), son 
of Gérard of Alsace, Count of Metz, Duke of Lorraine (-1070), of the House of 
Lorraine-Alsace. Thierry was a widower with a son Simon, and a daughter Gertrude. 
They had the following issue:
Thierry of Alsace "Theodoric" (c.?1099 – 1168), lord of Bitche, also Count of Flanders 
from 1128. Married to Sibylla of Anjou, and father to Margaret I, Countess of Flanders 
and Matthew, Count of Boulogne
Henry I (d. 1165), bishop of Toul
Ida, married Sigefroy (d. 1104), count of Burghausen
Ermengarde, married Bernard III Gros de Brancion (fr)
Gisela, married Frederick, count of Saarbrücken

Parents
____ Robert (Robrecht) I "de Fries" ("the Frisian") (ABT 1033 - 3 Oct 1093)
OF SAXONY Gertrude (ABT 1028 - 4 Aug 1113)

Siblings
OF FLANDERS Adela (ABT 1064 - 1115)
DE FLANDERS Gertrude (ABT 1070 - 1117)

Marriage To ____ Henry III (ABT 1065 - 1095)
    m.  

Notes

Parents
____ Henry (Henri) II (1021 - ABT 1079)
OF THE BETUWE (ORLAMUNDA) Adelaide (Adele) (Alix) (ABT 1045 - AFT 1086)

Children by ____ Henry III ABT 1065 - 1095
DE LOUVAIN Adelaide (Adelheid) (ABT 1085 - ABT 1160)

Marriage To OF ALSACE Theodoric II (Dietrich) (Thierry) (ABT 1050 - 30 Dec 1115)
    m. 1096 

Notes
her 2d

Parents
____ Gerard (Gerhard) III (IV) (ABT 1030 - 14 Apr 1070)
DE NAMUR Hedwig (ABT 1030 - ABT 1075)

Children by OF ALSACE Theodoric II (Dietrich) (Thierry) ABT 1050 - 30 Dec 1115
D'ALSACE Thierry (Dietrich) II (ABT 1099 - 17 Jan 1168)
OF LORRAINE Gisela (ABT 1100 - )

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