WILHELM IV COUNT von WEIMAR-ORLAMUNDA

WILHELM IV COUNT's father was WILHELM III COUNT von WEIMAR-ORLAMUNDA and his mother was ODA (Agnes) von OSTMARK.  His paternal grandfather was WILHELM II HERZOG von THURINGEN. He had a sister named N.N.. He had a half-sister named ADELAIDE (Maud).  He died in 1062.¹ 

They had a son named OTTO II COUNT.