Her mother, Joan Baez (née Bridge), referred to as Joan Senior or "Big Joan", was born in Edinburgh, Scotland, in 1913 as the second daughter of an English Anglican priest who claimed to be descended from the Dukes of Chandos.
Nëna e saj, Joan Baez, e quajtur Joan Senior ose "Big Joan", lindi në Edinburg, në Skoci, në vitin 1913 si bija e dytë e një prifti anglez Anglican, i cili pohonte se ishte pasardhës i Dukes së Chandos.