FRIEDRICH IV DUKE von TRUHENDINGEN

FRIEDRICH IV DUKE was born in 1189.¹   FRIEDRICH IV DUKE's father was FRIEDRICH III COUNT von TRUHENDINGEN.  His paternal grandfather was FRIEDRICH II COUNT von TRUHENDINGEN.  He was an only child.  He died at the age of 64 in 1253.¹ 

They had a son named FRIENDRICH V COUNT.