Frederick (after 1425 – 22 June 1468), killed in Wachtendonk on the day before the Battle of Straelen, married on 29 September 1461 to Eva of Linnep (before 1451 – 1483)
The Niers flows through Mönchengladbach, Viersen, Wachtendonk, Geldern and Goch before flowing into the Meuse just across the border with the Netherlands, in Gennep.