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Gertrude of Flanders, Duchess of Lorraine

Gertrude of Flanders, Duchess of Lorraine

Duchess of Lorraine
The basics
Quick Facts
Intro Duchess of Lorraine
Occupations Politician
Gender female
Mother: Gertrude of Saxony
Father: Robert ICount of Flanders
Spouse: Theodoric IIDuke of LorraineHenry IIICount of Louvain
Children: Thierry of LorraineCount of FlandersAdelaide of LeuvenHenri of Lorraine
The details

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

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

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


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