Barbara Brafman and Larry Stein are dedicating a Machzor with the name and date of death to appear on the bookplate:
Rochel Goldstein was born in Budapest, Hungary in 1924 to Yosef and Szerene nee Feldmann. She was single. Prior to WWII she lived in Budapest, Hungary. During the war, she was in Lichtenwoerth, Austria. She was murdered at age 21. Cause of death was listed as sexual assault.
Elhanan was murdered in the Shoah in Auschwitz in 1943 at age 10.
This information is based on a Page of Testimony (displayed here) submitted by his cousin, Hanina Khanina Cudzynowski Tzudzinovski