She and Bernard Siegel crossed paths while they were in college. Rachel’s mom, Judith Cohen, was born Jewish. Since she was born into a family of satellite engineers, she developed an interest in the field from an early age. Rachel completed her primary education in the same school as jack black. All three siblings, Howard, Rachel, and Siegel, are older than their half-sibling Jack Black. She has two siblings, Howard Siegel and Rachel Siegel. Rachel Black was Born in 1955 to Judith Love Cohen and Bernard Siegel in California, U.S. Howard Black, Jack Black, and Neil Siegel Relationship Between Rachel Black and Jack Black.Childhood and Early Life of Rachel Black.