Edward IV went on to rule, with a brief interruption, until his death 22 years later a death that triggered the final stage of the conflict and the rise of a new dynasty under Henry Tudor.
But Tudor Morgan, the heir to the dynasty, is back behind a counter once again - 10, 000 miles away in one of the world's most southerly shop at Port Lockroy on Antarctica.
They looked back reverently at King Henry V, who defeated France in 1415, and with contempt on King Richard III conquered in 1485 by Henry Tudor, who later founded his own dynasty as Henry VII.