The town of Valpovo on the river Karašica has been developed from the medieval fortress Walpo, which was first mentioned in the first half of the 14th century. The name of the place derives probably from the Old German word “walpot”, which refers to the manager of feudal estate. On February 23, 1397, King Žigmund donated the land of Valpovo and Nadasd in Baranja County to nobleman Ivan Morović. A fiefdom Valpovo owned by the family Morović during the 15th and 16th century presents the biggest property between the rivers Drava and Sava, including many villages and settlements. Around 1405. Viceroy Ivan Morović began building huge and fortified castle in Valpovo, which was a sign of his social and material power. His son Ladislav built a chapel of St. Ladislav inside the castle and turned it into a family crypt. On April 24, 1438, Ladislav Morović gave permission for the village of Željanovci, which is located near Valpovo, to become a market town. On the basis of these privileges the population of Željanovci gets their own self-government, that is, a certain city statute which regulates the relations and rights of the inhabitants. After the death of the Viceroy of Mačva Matijaš in 1472, the family Morović extinguishes and the fiefdom comes into king’s possesion. In 1481 Matijaš Korvin donated Valpovo and the surrounding villages to Matija and Petar Gerebu de Wyngart. After the noble family Gereb died out without male heir, the estate of Valpovo is being held by Emerik Perenji. His son Petar Perenji was one of the greatest Hungarian aristocrats and he was known as the last medieval lord of Valpovo. After Sulejman stationed the soldiers in 1543, the two-month siege occured. In the end Valpovo was conquered. With the fall of Valpovo the centuries old development of the city and its countryside is stopped and the material and cultural goods are being destroyed.