Konrad V Kantner was a duke of Oleśnica, Koźle, half of Bytom and half of Ścinawa during 1412–1427, since 1427 sole ruler over Oleśnica. He was the second son of Konrad III the Old, Duke of Oleśnica, by his wife Judith. Like his one older and three younger brothers, at the baptism he received the name of Konrad, which was characteristic in this branch of the House of Piast. His nickname of Kantner was derived from the town of Kanth, who was a property of the Oleśnica dukes since 1379.
Life
After the death of his father in 1412, Konrad V succeeded him in all his lands together with his older brother Konrad IV the Older as co-rulers, due the minority of their younger brothers. In 1416, when all Konrad III's sons attained his majority, Konrad IV renounced to the government on behalf of Konrad V and the rest of his brothers. However, because two other brothers, also pursued a Church career, the main beneficiaries in the government are two others laic brothers: Konrad V and Konrad VII the White, who in 1431 co-founded in Koźle a Minorites Cloister. In 1434 they purchased the town of Wołczyn to Duke Louis II of Brieg. The co-rulership was maintained until 1427, when was made the division of the Duchy: Konrad V retained the main city of Oleśnica. Like his brothers, Konrad V fought against the Hussites. In 1428 they tried unsuccessfully to prevent their depredations in the Duchy of Troppau. On 4 April 1431 they raided Gliwice, which was occupied by the Hussites and where just held religious discussions in which the Lithuanian prince Sigismund Korybut, a nephew of Vytautas, was involved. Presumably, therefore, undertook the Hussites in 1432 a raid into the Duchy of Oleśnica, which was largely spared from them until then. Konrad V and his brothers, however, managed to defeat them at Ścinawa. Together with his brother Konrad IV, other Piast Dukes and the cities of Wrocław, Świdnica and Nysa was notarized on 13 September 1432 for the Hussites the still occupied cities of Niemcza, Kluczbork and Otmuchów the amount of 10,000 groschen for damages. Their fight against the Hussites was rewarded by Emperor Sigismund, who, in his capacity as King of Bohemia, in 1434 transfer to them the districts of Psie Pole and Psary. Three years later, in 1437 he confirmed to them the complete investiture of this territories by Escheat, so that upon the death of the childless Konrad VII they could reverted to the Kingdom. Two years later, Konrad V died of the plague. The guardianship of his minor sons was taken by his brother Konrad VII.
Marriage and issue
By 9 October 1411, Konrad V married Margareta, whose origins are unknown. They had five children:
In his will, Konrad V leave the town of Wołów to his wife as her dower, who was ruled by her until her own death. His sons were excluded from the government by their uncle Konrad VII, who maintained his rule until 1450, when they finally deposed him and assumed the full control over the Duchy.
