Hermann I, Graf von Froburg
Hermann I, Graf von was born before 1090.  He died in 1145.

 Sophia Of Lenzburg Princess
Sophia Of was born in 1119.  She died at the age of 74 in 1193.

 Volmar II of Froburg Count 
Volmar II of was born in 1144.  He died at the age of 31 in 1175.

 Heilwig von Froburg
Heilwig von was born in 1157.  She died before 1183.