Malvasia companies occasionally use the name "Malvasia" or "Malvazia" for non-vintage Madeiras, especially those primarily marketed to Portuguese-speaking countries. English historical tradition associates Malmsey wine with the death of George Plantagenet, 1st Duke of Clarence, brother of King Edward IV of England. Following his conviction for treason, he was "privately executed" at the Tower on 18 February 1478, by tradition in the Bowyer Tower, and soon after the event, the rumour gained ground that he was drowned in a butt of Malmsey wine. Malvasia Malvasia (, also known as Malvazia) is a group of wine grape varieties grown historically in the
Rumney wine not a "fortified" wine in the modern sense, rather a "cooked" wine ("vin cuit") to which boiled-down must (grape syrup) was added. Rumney was exported from Methoni in the southern Peloponnese (one English source calls it "Rompney of Modonn") and perhaps also from Patras and other ports. Although modern methods are different, the Mavrodafni of Patras might be regarded as a modern equivalent of medieval Rumney wine. At the same period, Monemvasia, on the eastern coast of the Peloponnese, was the centre for the export of Malmsey wine; Cretan wine was the third of the medieval trio of Greek wines