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Male Frederick Click to view Frederick in the family tree

Frederick was born about 0965 in of, Luxembourg.1   Frederick's father was Siegfried Unknown and his mother was Hedwig Unknown. He had three sisters named Eva, Luitgarde De Of and Judith.  He was the second youngest of the four children.  He died in 1019.1 

Family Details of Frederick's family with Ermentrude Of Gleiberg

1 basel.FTW
Further sources/citations:
World Family Tree Vol. 2, Ed. 1 @ Tree #2013, 2013.ftw, World Family Tree Vol. 9, Ed. 1 @ Tree #2571, World Family Tree Vol. 4, Ed. 1 @ Tree #0574, 0574.ftw, phelps.FTW @ Tree #1353