On the external front, one of Frederick's main achievements was the Siege of Neuss (1474–75), in which he coerced Charles the Bold of Burgundy to give his daughter Mary of Burgundy as wife to Frederick's son Maximilian. The wedding took place on the evening of 16 August 1477 and ultimately resulted in the Habsburgs acquiring control of the Low Countries. After Mary's early death in 1482, Maximilian attempted to secure the Burgundian heritance to one of his and Mary's children Philip the Handsome. Charles VIII of France contested this, using both military and dynastic means, but the Burgundian succession was finally ruled in favor of Philip in the Treaty of Senlis in 1493.