He married Margareta Braun on 1 August 1928 and, at her insistence, he was known to all as Charles from that time on. Greta Braun (as she was called) had been born in Germany, having a German father and a Russian mother. Greta and Charles had three children, a son and two daughters.
Siya ang may-asawa Margareta Braun sa 1 Agosto 1928 at, sa kanyang paggigiit, siya ay kilala sa lahat ng bilang Charles mula sa panahon na sa. Pilita Braun (bilang siya ay tinatawag na) had been ipinanganak sa Alemanya, ang pagkakaroon ng isang Aleman ama at ina ng isang Russian. Pilita at Charles nagkaroon ng tatlong anak, isang anak na lalaki at dalawang anak.