Friederich was the son of Friederich I von Burg-Legenfeld and Sigena von Leige. The date and place of his birth have not been found.
Friederich II von Burg-Legenfeld
Friederich I von Burg-Legenfeld (c1020-c1110)
Sigena von Leige (c1030-c1110)
Goswin I de Liege