Final answer:
The specific anthropologist who defended the Iroquois and became an honorary member was not identified from the provided information. However, historical context about the Iroquois Confederacy's influence on early American leaders and their constitution was discussed, highlighting their significant impact on U.S. political principles.
Step-by-step explanation:
The anthropologist who became an honorary member of the Iroquois tribe after defending them in a land grant case was not explicitly mentioned in the provided information. However, the passage does mention the significance of the Iroquois Confederacy in history and its influence on the founding principles of the United States. The Iroquois played a pivotal role in shaping early American political thought with their constitution that included checks and balances and separation of power, elements that later influenced the U.S. Constitution.
The passage references historical figures and events such as the alliance of certain Iroquois tribes with the British during the American Revolutionary War, the influence of the Iroquois on early American leaders like Benjamin Franklin, and the 1988 United States Congress Concurrent Resolution 331, which acknowledged the Iroquois Confederacy's contribution to the development of the United States Constitution.
Without the specific name of the anthropologist, we cannot give a precise answer to the student’s question. Nevertheless, this history outlines the important relationship between the Iroquois Confederacy and early American developments.