Francis Buchanan-Hamilton

Dr Francis Buchanan, later known as Francis Hamilton but often referred to as Francis Buchanan-Hamilton (15 February 1762 – 15 June 1829) was a Scottish physician who made significant contributions as a geographer, zoologist, and botanist while living in India.

The standard botanical author abbreviation Buch.-Ham. is applied to plants and animals he described, though today the form "Hamilton, 1822" is more usually seen in ichthyology and is preferred by Fishbase.