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Birth:          ABT 1060 
Death:          9 Dec 1117 

Notes
https://en.wikipedia.org/wiki/Gertrude_of_Brunswick
Gertrud of Brunswick (German: Gertrud von Braunschweig; c.?1060 – 9 December 
1117), was Countess of Katlenburg by marriage to Dietrich II, Count of Katlenburg, 
Margravine of Frisia by marriage to Henry, Margrave of Frisia, and Margravine of 
Meissen by marriage to margrave Henry I. She served as regent of the County of 
Katlenburg during the minority of her son Dietrich III of Katlenburg, and as regent of 
the County of Northeim during the minority of her son Otto III of Northeim. She was 
also one of the leaders of the insurrections against Emperor Henry IV and his son 
Henry V.
Life[edit]

Gertrud was the only daughter of Margrave Egbert I of Meissen (d. 1068) and Immilla 
of Turin (d. 1078), and as such a member of the Brunonid dynasty. She thereby was a 
great-granddaughter of Gisela of Swabia, German queen and empress consort from 
1024 to 1043.

Katlenburg[edit]

She was married to Count Dietrich II of Katlenburg (d. 1085). In 1090, after the 
childless death of her older brother Margrave Egbert II of Meissen, last of the male 
Brunonids, she inherited the ancestral seat of Brunswick in Saxony. When her 
husband died, she acted as regent for their son Dietrich III.

Frisia[edit]

About 1086, Gertrude married again, this time to the Northeim count Henry the Fat (d. 
1101), who was appointed Margrave of Frisia in 1099. Their daughter Richenza of 
Northeim (d. 1142) married Lothar of Süpplingenburg, Duke of Saxony and future Holy 
Roman Emperor. He received the Brunonen's seat at Brunswick. After Henry's death in 
1101, Gertrud again acted as regent, this time for her second son Count Otto III of 
Northeim.

Meissen[edit]

Gertrud's third husband was the Wettin scion Henry I of Eilenburg (d. 1103), Margrave 
of Margraviate of Meissen since 1089. Their son, Henry II was born after his death in 
1103. She was one of the leaders of the insurrections against Emperor Henry IV and 
his son Henry V. She protected the interests of her sons and Margrave Henry II later 
secured the Wettin authority over Meissen.

Parents
VON BRAUNSCHWEIG Egbert I (Eckbert) (ABT 1025 - 11 Jan 1068)
OF TURIN Immilla (ABT 1020 - 21 Jan 1078)

Siblings
VON BRAUNSCHWEIG Gertrude (ABT 1060 - 9 Dec 1117)

Marriage To ____ Henry ("the Fat") (ABT 1055 - 1101)
    m. 1086 

Notes

Parents
VON NORTHEIM Otto I (ABT 1020 - 11 Jan 1083)
OF SWABIA Richenza (ABT 1025 - BEF 1083)

Children by ____ Henry ("the Fat") ABT 1055 - 1101
VON NORTHEIM Richensa (ABT 1087 - 10 Jun 1141)
VON NORTHEIM Gertrude (ABT 1088 - AFT 1154)

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