Renate was born in Berlin in 1920, to Ida Wolff (nee Christiansen) and Georg Wolff. Ida and Georg had met on the battlefield during WWI, when she was an X-ray technician and he a physician at a field hospital. According to Renate, Georg had been destined by his family to marry a first cousin (then a not-unusual practice among European Jews), but he balked at such inbreeding. Going to the opposite extreme, he carefully selected Ida, with a last name that would remove all doubt about any genetic mixing: Christiansen.
Renate’s earliest years were, aside from a few health scares, idyllic, at least as she recalled them. The family had a maid (standard for middle-class families in those years) named Bertha (pronounced “Bear-ta”), whom Renate adored. There was a family dog, an Airedale, named Merri. Renate and her younger brother, Peter, did well in school, and the family took hikes in the forest and occasionally vacationed on the shores of the Baltic Sea.
Things changed abruptly, however, in 1933, when Adolf Hitler came to power and began the foundations of the Nazi state.