“Art and science flourished in what we now know as the Renaissance.”
well you may want to talk of the “carolingian renaissance”, otherwise the very “Renaissance” that we are in use to think about, occured in “little ice ages”, XV century
Besides the villans during the barbarian invasions didn’t grow wine in parcels, for they were serfs and had no properties ; the celtish princes and the Romans used to import their wines from mediteranean roman countries, until that the muslim invasions stoped them ; though this kind of occupation was carried on and was mainly devoted to monasteries’s, (cuz of the mass wines) The still celtish “basic populations” were rather known to drink “cervoise” the original name for beer, hop and barley grew better in northern aeras. Charlemagne priviligied some wine productions for their quality. I don’t know much of the british wine production of this era, but I suppose they hadn’t, and most likely their wine was also imported from roman empire, if the Brits had any, it seems that it wasn’t really appreciated, since Bordeaux and La Rochelle were exporting quantities of barrels to England, though, after that the Plantagenets occupied the region, around XII century.
http://www.alyon.org/generale/cuisine/histoire_du_vin/monde_du_vin_1.html
Emmanuel Leroy Ladurie made some researches on climates based on wine producings registered in churches and villages annales from XIV century





