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Agnes of Loon (1150–1191), was a duchess consort of Bavaria, married to Otto I of Wittelsbach, Duke of Bavaria. She was regent of Bavaria during the minority of her son, Louis I, Duke of Bavaria, from 1183 to 1191. She was the daughter of Louis I, Count of Loon, and Agnes of Metz. Agnes was described as a forceful regent, who managed to secure the inheritance of her son.

Agnes of Loon
Joseph Anton Zimmermann Agnes van Loon kopergravure uit 1733 - 1000 jaar Loon in Alden Biesen 16-02-2019.jpg
Noble familyHouse of Loon
Spouse(s)Otto I of Wittelsbach, Duke of Bavaria
FatherLouis I, Count of Loon
MotherAgnes of Metz

Agnes was a patron of the writer Heinrich von Veldeke.


Agnes and Otto had the following children:

  • Otto (1169–1181)
  • Sophia (1170–1238), married Landgrave Hermann I of Thuringia (1155–1217),
  • Heilika I (b. 1171), married in 1184 to Hallgrave Dietrich of Wasserburg
  • Agnes (1172–1200), married Count Henry of Plain (d. 1190)
  • Richardis (1173–1231), married in 1186 to Count Otto I of Guelders and Zutphen
  • Louis I (1173–1231), married in 1204 to Ludmilla of Bohemia
  • Heilika II (b. 1176), married Count Adelbert III of Dillingen (d. 1214)
  • Elisabeth (b. 1178), married Count Berthold II of Vohburg (d. 1209)
  • Mechtild (1180–1231), married in 1209 to Count Rapoto II of Ortenburg (1164–1231).


Agnes of Loon
House of Loon
Born: 1150 Died: 1191
Preceded by
Matilda of England
Duchess consort of Bavaria
Succeeded by
Ludmilla of Bohemia