Siegfried von Sponheim
Siegfried von was born in 1015 in Sponheim, Rhineland.¹   He died at the age of 50 on July 5th, 1065 in Bulgaria.¹ 

 Richgard von Lavant
Richgard von was born about 1020.¹ 

 Stephen von Sponheim
Stephen von was born in 1047.^1 1 

 Engelbert I von Sponheim
Engelbert I von was born before 1060.¹   He died on April 1st, 1096.¹