Edmund Tudor Earl of Richmond was captured at Carmarthen Castle after a siege by men under the control of Sir Wiliiam Herbert. ^[1]

Pembroke Castle was captured by William Herbert. The young Henry Tudor was found in the castle where he had been hiding. ^[2]

William Herbert was given the castle at Pembroke in recognition of his assistance to Edward IV. Herbert was made the guardian of the future Henry VII who was living at the castle.

William Herbert was given the title of Constable of Harlech Castle by Edward IV and told to capture the castle from the Lancatrians. But the castle was strongly fortified and a lengthy siege began. ^[3]

King Louis XI of France provided Jasper Tudor, the Earl of Pembroke, with three ships and fifty soldiers to invade Wales. The small invasion force planned to gain support against Edward IV and help the Lancastrian garrison trapped at Harlech Castle. The castle was surrounded by the English so Pembroke attacked and occupied Denbigh gaining many supporters. Lord Herbert was dispatched to deal with the threat and defeated Pembroke who managed to escape.

Edward's army was insufficient to deal with the rebels alone and he had moved them to Nottingham to wait for a larger army to join them led by Sir William Herbert, the Earl of Pembroke. Pembroke's army was attacked and defeated by a combined rebel army led by Robin of Redesdale and the Earl of Warwick who had returned from France. The battle took place at Edgecote near Banbury. Sir William Herbert and his brother Richard were captured and executed.