Pwy fu farw ym mis Mawrth 1999

German-Canadian physicist and physical chemist who won the 1971 Nobel Prize for Chemistry for his work on the electronic structure and geometry of molecules, particularly free radicals

Iconic British singer and recording artist known for her distinctive mezzo-soprano voice and as a popular performer of blue-eyed soul, pop, and dramatic ballads, an enduring figure of the Swinging Sixties