Throughout his life Keynes worked energetically for the benefit both of the public and his friends – even when his health was poor he laboured to sort out the finances of his old college and to try to design an international monetary system that would benefit the whole world at Bretton Woods. Keynes suffered a series of heart attacks, which ultimately proved fatal, during negotiations for an Anglo-American loan in Savannah, Georgia he was trying to secure on favourable terms for the United Kingdom from the United States, a process he described as "absolute hell". Keynes died of a heart attack at Tilton, his farmhouse home near Firle, East Sussex, UK, on 21 April 1946 at age 62. It was a few weeks after returning from America. Both of Keynes's parents outlived him: father John Neville Keynes (1852–1949) by three years, and mother Florence Ada Keynes (1861–1958) by 12 years. Keynes's brother Sir Geoffrey Keynes (1887–1982) was a distinguished surgeon, scholar and bibliophile. His nephews include Richard Keynes (born 1919) a physiologist; and Quentin Keynes (1921–2003) an adventurer and bibliophile. His widow, Lydia Lopokova, lived on until 1981.