British novelist and geologist.
William Antony Swithin Sarjeant (15 July 1935 – 8 July 2002), also known by the pen name Antony Swithin, was a professor of geology at University of Saskatchewan. He was also interested in mystery writing, fantasy writing, folk singing, and heritage preservation. He received the Sue Tyler Friedman Medal in 1990 for his work in the history of geology. Born in Sheffield, England, he wrote The Perilous Quest for Lyonesse series of novels (1990–1993) in the vein of The Lord of the Rings. They were set in a fictional land of Rockall based upon the small real island of the same name northwest of Sc