from Yad Vashem Central Database of Shoah Victims:
Kurt Geldern van was born in Koblenz, Germany in 1902 to Moritz and Bertha. He was married to Elfriede nee Schweizer. Prior to WWII he lived in Koeln, Germany. During the war he was in Koeln, Germany.Kurt was murdered in the Shoah.This information is based on a Page of Testimony (displayed here) submitted by a researcher, Alex Salm
also includes: mother Berta Meyer, father Moritz von Geldern. Wife Elfried Schweizer, born 6-17-1902
While summary says "van geldern" the page of testimony clearly says "von geldern"