Siegfried I Walbeck
Siegfried I was born in 0947.  He died at the age of 61 on March 15th, 1008.

 Kunigunde von Stade
Kunigunde von was born about 0956.^1 1 

 Friedrich of Madgeburg Castle Count
Friedrich of was born in 0988.  He died at the age of 79 in 1067.²