In 1092 Carlisle Castle was established by [[William II]] (William Rufus]] to tighten his hold on [[Cumbria]], which had only recently been acquired by the English Crown from the Scots. From then on until the Union of the Crowns of England and Scotland in 1603, Carlisle was vital to English defence of the western borders. | In 1092 Carlisle Castle was established by [[William II]] (William Rufus]] to tighten his hold on [[Cumbria]], which had only recently been acquired by the English Crown from the Scots. From then on until the Union of the Crowns of England and Scotland in 1603, Carlisle was vital to English defence of the western borders. |