Walther IV Berthout Von Mecheln
Walther IV Berthout Von was born about 1160.  He died in 1201.

 Guda Von Loos
Guda Von was born about 1160.

 Walther Berthout V Von Mecheln
Walther Berthout V Von was born before 1195.  He died after 1221.

 Heinrich I Berthout Von Düffel
He died before 1253.