- Born: Abt 987, Gand, Flandre-Oriental, Belgium
Ancestral File Number: FD67-5P.
Ancestral File Ver 4.13 and 4.19 FD67-5P.
Thetburga married Count Siegfried HOLLAND, son of Count Arnulf HOLLAND and Countess Liutgard LUXEMBOURG. (Count Siegfried HOLLAND was born about 983-987 in Gand, East Vlaanderen, Flanders, Belgium and died on 6 Jun 1030.)