Friedrich of II Sommerschenburg Duke
Friedrich of II was born in 1121 in Of Sommerschenburg,Sachsen,Prussia.  He died at the age of 41 on February 19th, 1162.¹ 

 Luitgard of Stade Princess
She died on January 30th, 1152.¹ 

 Sophia of Sommerschenburg Princess
Sophia of was born in 1147.  She died at the age of 44 in 1191.¹