Gertrude of Northeim

Gertrude of Northeim (also Gertrude of Nordheim) (c.1090 – after 1154/before 1169), was a German noblewoman and regent.

She was the daughter of Henry, Margrave of Frisia. Gertrude was heiress of Bentheim and Rheineck. She married first Siegfried I of Weimar-Orlamünde and then Otto I, Count of Salm. She was regent of the County of Weimar-Orlamünde during the minority of her son Siegfried II of Weimar-Orlamünde in 1113-1115, and regent of the County of Bentheim on behalf of her daughter Sophia in 1150.

Gertrude was born around 1090. She was the daughter of Henry, Margrave of Frisia and Gertrude of Brunswick.^[1] Gertrude had two full siblings: Otto III of Northeim, who succeeded her father, and Richenza, who married the future Emperor Lothair II.^[2] From her mother’s second marriage, to Henry I, Margrave of the Saxon Ostmark, Gertude also had a half-brother, Henry II, Margrave of Meissen.

Gertrude’s first husband was Siegfried of Ballenstedt. Though marriage to Siegfried, Gertrude was countess palatine of the Rhineland, and countess of Weimar-Orlamünde.

Gertrude had three children with Siegfried:^[3]

• Siegfried II of Weimar-Orlamünde (1107-1124)
• Adela of Weimar-Orlamünde, married Conrad I of Peilstein
• Wilhelm von Ballenstedt (1112-1140)

When she was widowed in 1113, her son Siegfried II of Weimar-Orlamünde succeeded his father as count of Weimar-Orlamünde. Her son was five years old, and Gertrude acted as his regent.

In about 1115, Gertrude married again. Her second husband was Otto I, Count of Salm, son of the German anti-kingHermann of Salm.^[4] Part of the reason Gertrude married Otto was to secure a male protector for her underage sons, Siegfried II and William.^[5] Otto likely became the regent of Weimar-Orlamünde during the minority of her son.

With Otto, Gertrude had several children, including:

• Otto II (c.1115– 1148/1149), fought against Hermann von Stahleck to recapture the County Palatine of the Rhine and was taken prisoner in 1148. He was later strangled at Schönburg Castle, near Oberwesel in 1148 or 1149
• تزوجت صوفيا من ديرك السادس، كونت هولندا (توفي في 6 أغسطس 1157).
• تزوجت بياتريكس من ويلبراند الأول، كونت لوكوم-هالرموند

بعد وفاة ابنها أوتو الثاني عام 1148 وزوجها أوتو الأول عام 1150، حكمت جيرترود مقاطعة بنتهايم بنفسها بصفتها وصية على ابنتها الكبرى، وضمنت أن تحتفظ ابنتها صوفيا بملكية راينيك. ^{[ 6 ]}

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• L. Fenske، Adelsopposition und kirchliche Reformbewegung im östlichen Sachsen
• M. Schaab، Geschichte der Kurpfalz ( Kohlhammer Verlag 1988).
• ر. هيلدبراند، هرتزوغ لوثار فون ساكسين (Verlag August Lax Hildesheim 1986).
• J. Dendorfer، 'Si(e)gfrid (Graf von Ballenstedt, Pfalzgraf von Lothringen)،' في Neue Deutsche Biographie ، المجلد 24 (برلين، 2010)، ISBN 978-3-428-11205-0، الصفحات  345 وما بعدها.
• A. Thiele، Erzählende genealogische Stammtafeln zur europäischen Geschichte" Band I، Teilband 1 Deutsche Kaiser-، Königs-، Herzogs- und Grafenhäuser I
• L. بارتنهايمر، ألبريشت دير بار. Gründer der Mark Brandenburg und des Fürstentums Anhalt

• جيرترود نورتهايم (في المانيا)