Esther Horonczyk was born in 1913 in Krzepice, Poland, the youngest child of Rywka-Fraidla Horonczyk neé Heller and Shimon Horonczyk. Rywka passed away in Poland, and in 1926 Esther moved to France together with her family. In Paris, Esther married Nissan Frenkel and in 1940 their only son Richard was born.
Esther Frenkel was deported to Pithiviers from Paris together with her two-year-old son Richard. From there they were deported, separately, to Auschwitz. Both were murdered. Her husband Nissan was deported to Beaune-la-Rolande from where, in June 1942, he was sent to Auschwitz where he was murdered.