In a career lasting three quarters of a century, Dame Angela Lansbury won high praise and prizes in cinema, theatre and TV, and became a member of the acting aristocracy in three countries – Britain, where she was born; America, her home for most of her life; and Ireland, where she kept a house for many decades. Her movie career stretched from Gaslight in 1944 to the 2018 children’s films, Buttons and Mary Poppins Returns. She went from youthful prodigy – with two Oscar nominations by the age of 21 – to cinematic grande dame: in 2014, as her 90th...