New novel about Joseph Brant

Manituana is the name - by Wu Ming which is I think a group of Italians - and according to the website the background is
In 1775, at the dawn of the revolution that gave birth to the United States of America, British loyalists and rebels compete for an alliance with the Six Nations of the Iroquois. The Iroquois, the most powerful indigenous tribal group in the Mohawk River Valley, with a constitution hundreds of years old, have coexisted with the colonists for generations. Now they must make a painful decision that gravely endangers the future of their mixed community. Together, English and Indian representatives of that community undertake a long voyage to London, capital of the British Empire, knowing that the road back will be paved with war
There's a review from the Guardian here
Video trailer to the Italian edition here