Yaroslaph (Yaroslav) Horak was born on 12 June 1927 in Harbin, China, the son and second child of Joseph Horak, a Czech-born engineer, and Russian mother, Zanidia. He and his older sister, Josephia (Josephine), grew up in the suburb of Novyi Gorod and attended the YMCA International School. In 1939, his family migrated to Sydney, Australia following the Japanese invasion of Manchuria and prior to World War II. They settled in Centennial Park, where he attended St Mary's Cathedral College and subsequently undertook evening art classes at the Sydney Technical College.
