Richard and Edward were forced to flee to Burgundy in October 1470 after Warwick defected to the side of the former Lancastrian queen Margaret of Anjou. In 1468, Richard's sister Margaret had married Charles the Bold, the Duke of Burgundy, and the brothers could expect a welcome there. Edward was restored to the throne in the spring of 1471, following the battles of Barnet and Tewkesbury, in both of which the 18-year-old Richard played a crucial role.