In 1943, she married a USAAF pilot, Lt. John Daniel Bowen, and moved to the United States.
Byron continued to act into the new millennium, her film, theatre and television work included Agatha Christie's The Mousetrap (1990), an adaptation of Jane Austen's Emma (1996), Steven Spielberg's Saving Private Ryan (1998) and Stephen Poliakoff's series, Perfect Strangers (2001).