Frederick I Of Wassenburg Count
Frederick I was born about 0975.  He died after 1030.  He was buried after 1030.

 Hemma Of Oeringen Countess
Hemma was born about 0980.

 Frederick II Von Diessen Count
Frederick II was born about 0998.  He died about 1075.  He was buried about 1075 in St Blasien.