Konrad X the White or Młodszy, was a Duke of Oleśnica, Koźle, and half of both Bytom and Ścinawa during 1450–1452, since 1452 sole ruler over half of Ścinawa, during 1471–1472 sole ruler over Koźle and whole Bytom, and since 1478 sole ruler over Oleśnica.
Background
He was the second son of Konrad V Kantner, Duke of Oleśnica by his wife Margareta. After his father"s death in 1439, Konrad X and his older brother Konrad IX the Black were excluded from the government by their uncle Konrad VII the White, who ruled until 1450, when Konrad X and Konrad IX deposed him and took over the Duchy as co-rulers. However, two years later, in 1452, they decided to divide their domains.
Career
Konrad X obtained half of Ścinawa. 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.
At the end, Konrad X could make a settlement with the Hungarian King, under which Konrad X recognized him as King of Bohemia and he was obliged to enter in the coalition of Olomouc.
In 1488, he attempted to invalidate his alliance with King Matthias by joining in a coalition with January II the Mad, Duke of Głogów and Henry I the Older, but was defeated in 1489 by the Hungarian forces. Then he was forced to give up the Uraz Castle to the royal treasure.
After the death of King Matthias in 1490 he could recover the full government over Oleśnica, Syców and Wąsosz. Konrad X married with Dorothea Reynkenberg (d 6 January 1471), daughter of Nikolaus (or Nikodemus) Reynkenberg, a coppersmith.
They had no children.
With him, the Oleśnica branch of the Piast dynasty became extinct. Half of Ścinawa was taken by Duke Casimir II of Cieszyn and Oleśnica was obtained by Henry I the Older.