The first English author to discuss it specifically may have been John Hales, in his A Discourse on the Commonweal of this Realm of England, though in the 19th century H. D. Macleod named it for a contemporary of Hales.  Later in the 19th century Robert Giffen argued that its namesake didn't understand the importance of bim
The first English author to discuss it specifically may have been John Hales, in his A Discourse on the Commonweal of this Realm of England, though in the 19th century H. D. Macleod named it for a contemporary of Hales.  Later in the 19th century Robert Giffen argued that its namesake didn't understand the importance of bimetallism, while William Stanley Jevons claimed, on its basis, that Herbert Spencer's arguments about private coinage were flawed.  Its namesake enunciated this principle in the 16th century in response to the "Great Debasements" introduced by the predecessors to Queen Elizabeth.  FTP, name this principle which states that bad money drives good money out of circulation.
The first English author to discuss it specifically may have been John Hales, in his A Discourse on the Commonweal of this Realm of England, though in the 19th century H. D. Macleod named it for a contemporary of Hales.  
Gresham's Law