Thomas William Coke (1754-1842), also known as Coke of Norfolk and later the first Earl of Leicester, was an English politician, gentleman farmer and promoter of new agricultural methods. The old history books describe him as one of the key pioneers of the Agricultural Revolution, which is probably exactly the kind of aggrandisement he would have approved of!
At the age of 22 he inherited his uncle’s estate Holkham in Norfolk, which included 54 farms. The farms were not badly managed by the standards of the time but the Agricultural Revolution was underway and Thomas Coke was keen to adopt new methods, such as crop rotation and selective breeding.
Perhaps his most significant impact concerned sheep. Thomas Coke introduced new types of grass for his sheep to graze on and by 1793 he claimed to have increased the number of sheep at Holkham from 700 to 2,400 . He also experimented with the selective breeding of sheep and promoted the English Leicester, a new improved breed in the late 18th century which is now considered rare. In order to encourage the spread of these new techniques he began hosting annual sheep shearing competitions. These grew into large shindigs and drew influential people from some distance.
He qualifies as a food hero because he helped to popularise new agricultural methods. I admire his gusto in being an early adopter and his enthusiasm to share his new found knowledge.
Worth a trip to his old Palladian gaff sometime I think – http://www.holkham.co.uk/
 Susanna Wade Martins, 2009, Coke of Norfolk (1754-1842), The Boydell Press, Woodbridge, p.110