Generally, native americans in what would become the United States and Canada didn’t have royalty such as kings, but there were rare exceptions. There were three Mohawk chiefs of the Iroquois Confederacy and a Mahican of the Algonquian peoples who were called Kings.
While these four Iroquois were not the first American Indians to visit England (Pocahontas had come in 1616), they were the first to be treated as heads of state.