Kdo se je poročil s Judith van Beieren (1100-1130)?

Judith van Beieren ook bekend onder de naam Judith Welf (circa 1100 - 22 februari 1130 of 1131) was hertogin van Zwaben.

Frederick II (German: Friedrich II, 1090 – 6 April 1147), called the One-Eyed (der Einäugige), was Duke of Swabia from 1105 until his death, the second from the Hohenstaufen dynasty. His younger brother Conrad was elected King of the Romans in 1138.