Born Millicent Lilian Entwistle in Port Talbot, Glamorgan, Wales, to English parents Emily Entwistle (née Stevenson) and Robert Symes Entwistle, she spent her early life in West Kensington, London [REF].
In December 1922, Robert Entwistle died, the victim of a hit-and-run accident on Park Avenue and 72nd Street in New York City [REF].