I found out one of my ancestors has a Stolperstein: Duifje Aptroot-Wijnberg died in 1944 in Enschede, at age 88, after living there for a while (originally the family lived in Leek). She died during the war, but I don't know any details. Two of her daughters, Lea and Hester, were murdered by the nazis. Her youngest son Siemon Aptroot was my great-grandfather.