Background
She was the daughter of Louis I, Count of Loon, and Agnes of Metz.
She was the daughter of Louis I, Count of Loon, and Agnes of Metz.
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).