We have already seen how, after the defeat of Braddock, the western tribes rose with one accord against the English. Then, for the first time, Pennsylvania felt the scourge of Indian war; and her neighbors, Maryland and Virginia, shared her misery. Through the autumn of 1755, the storm raged with devastating fury; but the following year brought some abatement of its violence. This may be ascribed partly to the interference of the Iroquois, who, at the instances of Sir William Johnson, urged the Delawares to lay down the hatchet, and partly to the persuasions of several prominent men among the Quakers, who, by kind and friendly treatment, had gained the confidence of the Indians.[136] By these means, that portion of the Delawares and their kindred tribes who dwelt upon the Susquehanna, were induced to send a deputation of chiefs to Easton, in the summer of 1757, to meet the provincial delegates; and here, after much delay and difficulty, a treaty of peace was concluded. This treaty, however, did not embrace the Indians of the Ohio, who comprised the most formidable part of the Delawares and Shawanoes, and who still continued their murderous attacks. It was not till the summer of 1758, when General Forbes, with a considerable army, was advancing against Fort du Quesne, that these exasperated savages could be brought to reason. Well knowing that, should Forbes prove successful, they might expect a summary chastisement for their misdeeds, they began to waver in their attachment to the French; and the latter, in the hour of peril, found themselves threatened with desertion by allies who had shown an ample alacrity in the season of prosperity. This new tendency of the Ohio Indians was fostered by a wise step on the part of the English. A man was found bold and hardy enough to venture into the midst of their villages, bearing the news of the treaty at Easton, and the approach of Forbes, coupled with proposals of peace from the governor of Pennsylvania.