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In page Henry VI of England:

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Mainly under her leadership, Lancastrian resistance continued in the north of England during the first period of Edward IV's reign but met with little luck on the field. At the same time as Henry's cause was beginning to look increasingly desperate in military terms, an English embassy to Scotland, through the Earl of Warwick on behalf of Edward, served to further weaken his interests at the Scottish Court in political terms.[4] After the queen mother's death in November 1463, Scotland now actively sued for peace with England and the exiled king passed back across the border to try his fortune with those nobles in the north of England and Wales who were still loyal.[citation needed]