A true relation of the proceedings of the northern forces : under the command of Col. Lambert, Col. Blackemore, and Col. Harrison. Together with their resolutions to fight Sir Marmaduke Langdale, whose strength and deportment in the counties of Westmerland and Cumberland is fully declared, by a petition of many honest Presbyterian ministers, together with divers gentlemen and other inhabitants of the aforesaid counties and places adjacent, who are plundred and banished from their dwellings. To the commanders in chief of the Parliament forces in the north, desiring their present ayd and assistance.