Alan John Drinnan was a professor of dental surgery at the State University of New York at Buffalo, New York, USA. He was born in Bristol, England on 6 April 1932, the son of Leslie Cyril John Drinnan and Doris May Drinnan née Porter. He served as a dental officer in the Army and later immigrated

Born on 9 December 1858 second child and only son of George Rhind Bull MRCS and his wife Ann Savage Robins, he was educated at Epsom College and St Mary's Hospital, and after serving as house surgeon at the Kent and Canterbury Hospital and resident pathologist at the General Hospital, Birmingham, he