Sydney Francis Ashby (31 December 1874, Rock Ferry, Cheshire, UK – 6 March 1954, Sussex) was a British mycologist and phytopathologist.
After his return to the UK, he became a Carnegie Research Fellow, working under Alfred Daniel Hall at the Rothamsted Experimental Station.
[3] On 10 January 1910 Ashby married Caroline Louise Cork in Saint Catherine Parish, Jamaica.
[4][2] For around five years from 1921 to 1926, Ashby was a professor of mycology at the Imperial College of Tropical Agriculture, Trinidad.
[2] Early in WWII, he and his wife suffered the loss of a son, who served in the RAF and was killed in his first operational flight as an observer.