Sir William Johnson, 1st Baronet (c. 1715 – 11 July 1774) was an Anglo-Irish official of the British Empire. As a young man, Johnson moved to the Province of New York to manage an estate purchased by his uncle, Admiral Peter Warren, which was located amidst the Mohawk, one of the Six Nations of the Iroquois League. Johnson learned the Mohawk language and Iroquois customs, and was appointed the British agent to the Iroquois. Because of his success, he was appointed in 1756 as British Superintendent of Indian Affairs for the northern colonies. Throughout his career as a British official among the Iroquois, Johnson combined personal business with official diplomacy, acquiring tens of thousands of acres of Native land and becoming very wealthy.