FRIEDRICH IV DUKE von TRUHENDINGEN
FRIEDRICH IV DUKE was born in 1189.¹   He died at the age of 64 in 1253.¹ 

 AGNES von GRAISBACH
AGNES is no longer alive.

 FRIENDRICH V COUNT von TRUHENDINGEN
FRIENDRICH V COUNT was born before 1223.¹   He died in 1271.¹