After the death of his brother in 1471, Konrad X reunited the entire duchy in his hands, except Oleśnica, which was the dower of his sister-in-law Margareta of Rawa and later ruled by his niece Barbara.

In view of his deep debts, he sold his Upper Silesian domains to Duke Henry I the Older of Ziębice.

When Konrad X couldn't deal with his debts, he tried to sell his lands to the rulers of Saxony, which led the intervention of King Matthias and the Teutonic Order in 1480.

In 1488, he attempted to invalidate his alliance with King Matthias by joining in a coalition with Jan II the Mad, Duke of Głogów and Henry I the Older, but was defeated in 1489 by the Hungarian forces.

According to the standards of the House of Piast, the marriage was considered morganatic, and Dorothea was forbidden to assume the titles and rank of her husband.