The Potawatomi nation, along with the Ojibwe and Ottawa nations
were part of the powerful three-nation alliance called the
Council of Three Fires. The Potawatomi were considered by the
others to be
the "youngest brother."
It was an assemblage of Potowadomi chiefs who "deeded" their
ancestral land to the Macomb brothers, William and Alexander,
on July 6, 1776. The Macombs were prominent Detroit merchants
at the time. Today, most historians start Grosse Ile's historical clock
from that
real estate agreement, which was sealed under a tree,
later appropriately named, The Treaty Tree.