​From Wikipedia, the free encyclopedia.   Ralph Bates (12 February 1940 – 27 March 1991) was an English film and television actor, known for his role in the British sitcom Dear John and for being one of Hammer Horror's best-known actors from the latter period of the company. Bates was born in Bristol, England, of French ancestry (He was the great, great nephew of French scientist Louis Pasteur) and educated at Trinity College Dublin. He read French there, before winning a scholarship to Yale D...