] Perhaps, but no-one sems to refer to them by breed. Usually it's just a "horse" or a "plough horse" or something like that. Do you have any quotes to share on this? I'd be very interested to know of specifc breeds being mentioned..I've got a bit on cows , quite a lot on pigs, and something on sheep, but on horses, I have nothing. And that's strange, because even in the breeding mania of the 1750's, no-one seems to have specialised in horses.

I'm not quite sure if this is what you are looking for, but here are some specific breeds and their uses. The Hackney horse was used as a coach horse in England, as well as the Cleveland Bay, which I believe pulls the Queen's carriage. Also, (as I am sure you know) Thoroughbreds were used for racing. The famous Thoroughbred Eclipse was born in 1764 in England. If I come across any specific breeds used for farming in that time period, I will let you know.