In 1763, Thayendanegea, then twenty-one years of age, married the daughter of an Oneida chief, and two years afterwards we find him settled at Canajoharie Castle, in Mohawk Valley, where he for some years lived a life of quiet and peaceful repose, devoting himself to the improvement of the moral and social condition of his people, and seconding the efforts of the missionaries for the conversion of the Indians to Christianity. Both missionaries and others who visited and were intimate with him during this time were very favourably impressed by him, and have left on record warm encomiums of his intelligence, good-breeding, and hospitality. Early in 1772 his wife died of consumption, and during the following winter he applied to an Episcopal minister to solemnize matrimony between himself and his deceased wife's sister. His application was refused, upon the ground that such a marriage was contrary to law; but he soon afterwards prevailed upon a German ecclesiastic to perform the ceremony. Not long afterwards he became seriously impressed upon the subject of religion, and experienced certain mental phenomena which in some communities is called "a change of heart." He enrolled himself as a member of the Episcopal Church, of which he became a regular communicant. The spiritual element, however, was not the strongest side of his nature, and his religious impressions were not deep enough to survive the life of active warfare in which he was soon afterwards destined to engage. Though he always professed--and probably believed in--the fundamental truths of Christianity, he became comparatively indifferent to theological matters, except in so far as they might be made to conduce to the civilization of his people.