Petronelle Marguerite Mary Crouch Cook aka Petronelle Cook and Margot Arnold. Petronelle Marguerite Mary Crouch was born in 16 May 1925 in Devonport, Devon. She received a B.A. with a Diploma in Prehistoric Archaeology and Anthropology in 1947, and an M.A. in 1950 from Oxford University. She was a long-time resident of Hyannis, Massachusetts. She died in New York City, New York in September 2016 at the age of 91.[