"It is capricious, and most probably racial, of scholars to continue dismissing the [Iroquois] Keepers [oral historians] as incompetent witnesses on their own behalf," Mann and Fields argue in their paper.Scholars who insist on proof of the Iroquois League's origins written in a European language engage in a circular argument, Mann argues.Fenton calls the "Condolence Cane." Mann and Fields used a figure of 145 Tadadahos (from Mohawk oral historian Jake Swamp), and then averaged the average tenure of other lifetime appointments, such as popes, European kings and queens, and U. Averaging the tenures of all three groups, Mann and Fields found an estimated date that compares roughly to the 1142 date indicated by the eclipse record, and the 1090 date calculated from family lineages by Underwood.
The five original nations (Mohawk, Oneida, Onondaga, Cayuga, and Seneca) were joined by the Tuscaroras about 1700 A. The 1451 founding date was first proposed in 1948 by Paul A. Wallace, who gathered Iroquois oral history in his White Roots of Peace and other works.
According to Mann, the Seneca were the last of the five Iroquois nations to accept the Great Law of Peace.
In an academic paper titled "A Sign in the Sky: Dating the League of the Haudenosaunee," Mann estimates that the journey of Deganawidah (The Peacemaker) and Hiawatha in support of the Great Law had begun about a quarter-century earlier with the Mohawks, at the "eastern door" of the Confederacy, about 25 years earlier.
The ratification council convened at a site that is now a football field in Victor, New York. Mann, a doctoral student in American Studies at Toledo University of Ohio; Fields, an astronomer, is an expert in the history of solar eclipses.
The Senecas' oral history mentions that the Senecas adopted the Iroquois Great Law of Peace shortly after a total eclipse of the sun.