Around 1370 Henry made an arrangement with the Dukes of Opole, Bolko III and Władysław (who was approved by the Emperor Charles IV in February and March 1372): in case of Henry's death without issue, Niemodlin was inherited by the Dukes of Opole.

His relations with the new bishop, Duke Wenceslaus II of Legnica, were correct because he chosen to live in Otmuchów.

Henry died on 14 September 1382 year and was buried in the Kolegiata of St. Bartholomäus in Głogów.

Contrary to the agreement of 1372, after Henry's death, Niemodlin was taken by King Wenceslaus IV of Bohemia as an emptied fief, and pretend to given them to Przemysław I Noszak, Duke of Cieszyn, but this caused the strong opposition of the Dukes of Opole, who claimed his hereditary rights.

The Duchy was divided: Władysław of Opole received Głogówek and Prudnik, and Bolko III's sons obtain Niemodlin.