Birth of Mavis Lilian Lever (later Batey) in Dulwich, London, England.
Mavis Lilian Lever, known historically as Mavis Batey, was born on May 5, 1921, in Dulwich, a district of London. This area, noted for its historical and cultural significance, was the perfect backdrop for Batey’s early years. Her parents nurtured an inquisitive nature that would serve her well in her future endeavors in cryptanalysis. Her birth marked the heralding of a future key figure in cryptology, whose work at Bletchley Park would assist greatly in the Allied efforts during World War II.