How did the Battle of Barnet affect Richard Neville, earl of Warwick?

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The Battle of Barnet on April 14, 1471, resulted in the death of Richard Neville, 16th earl of Warwick, effectively ending his role as a central figure in the Wars of the Roses.12

During the battle, Warwick fought on foot to demonstrate his commitment to his troops and to dispel any suspicion that he might desert them. However, as the Yorkist forces under Edward IV gained the upper hand, Warwick was killed while attempting to flee the field. His death marked the definitive collapse of his influence, as he had previously been the primary power broker who had restored Henry VI to the throne in 1470. Following his demise, the Yorkist victory at Barnet, combined with the subsequent defeat of Lancastrian forces at the Battle of Tewkesbury, secured Edward IV’s position as king until his death in 1483.12