I recently watched the latest 'Robin Hood' film, starring Russell Crowe (and rather dull and unconvincing it was too). In one scene medieval peasants are depicted using shire horses to pull the plough. I suspect that this is an anachronism and that peasants of the period (12th century, I think) would have used oxen. Does anyone know if I'm right?

I suppose that I could look it up ... but I'm feeling idle ...