Walraven Baron of Gendt (c. 1580-1644) was the son of Johan Baron van Gendt (1530-1613) lord of Oyen and Dieden. Walraven had a long career in the Dutch and Brandenburg army. He fought in the 1600 Battle of Nieuwpoort. At his death in 1664 he was governor of Rees. In 1607 Walraven bought Dussen castle. He is said to have rebuilt the castle from the ground up. In 1620 Walraven sold Ooijen to Johan Sigismund Kettler (c. 1570-1659).
