"The battle of Twt Hill (16 October 1461) was a Yorkist victory that ended open Lancastrian resistance to Edward IV in most of Wales, leaving only Harlech in Lancastrian hands.
Although the Yorkists were powerful in the Welsh Borders, where they had inherited the lands of the Mortimer earls of March, much of Wales was Lancastrian. After the dramatic Yorkist victory at Northampton (10 July 1460), in which Henry VI was captured, Jasper Tudor, earl of Pembroke, organised the Lancastrian resistance in Wales. He was opposed by Edward, earl of March (the future Edward IV), who was sent to Ludlow to deal with resistance in Wales. At the same time the earl of Warwick remained in London, while Edward's father Richard of York went north to deal with the main Lancastrian army.
On 30 December 1460 York attacked a larger Lancastrian army at Wakefield and was defeated and killed. The victorious Lancastrians advanced south towards London. Edward prepared to move east to join with Warwick, but he was prevented from moving by Tudor, who with James Butler, earl of Wiltshire and Ormond was advancing across Wales towards him. The two armies met at Mortimer's Cross on 2 February 1461, where Edward won his first battlefield victory. The Lancastrian army was scattered, but Pembroke and Wiltshire escaped. Pembroke remained in Wales, while Wiltshire made his way to the main Lancastrian army
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