"About this time (May 1783) occurred the unfortunate killing of Untoola, or 
Gun Rod of Citico, a Cherokee chief, known to the whites as Butler. It was when
attempts were being made to revive peaceful relations between the white and
Indian populations.  The aged and wise among the Cherokees could clearly see the
futility of continuing hostilities with the whites, and their councils had at length
prevailed over the inconsiderateness and rashness of the young men and warriors.
But Butler was one of the chiefs who was opposed to peace, and when he heard of
the presence of James Hubbard (Hubbard was John Sevier's favorite assassin and
who was responsible for the murder of the Tassel, another resister to white
invasion) and a fellow soldier, who were in the Cherokee country for the purpose
of trafficking for corn and other necessities, he, in company with a brave who still
adhered to his fortunes, went forth to meet Col. Hubbard, against whom, according
to Indian ideas of honor, he had special reasons for enmity, and attempted to put
him out of the way. After meeting Hubbard, and maneuvering for some time to
gain the of advantage of position, Butler suddenly, and as quick as lightning, raised
his gun and fired upon Col. Hubbard, the ball passing between his head and ear,
grazing the skin and slightly stunning him; Butler and his attendant brave suddenly
turned their horses' heads and galloped rapidly away. Recovering himself Col.
Hubbard seized his rifle, which he had leaned against a tree for the purpose of
convincing Butler of his peaceful intentions, fired upon him when at a distance of
about eighty yards, hitting him in the back and bringing him to the ground. 
Approaching the wounded Indian hard words passed between the two, and at
length Col. Hubbard, unable to longer bear the taunts and insults of Butler, clubbed
his gun and killed him at a single blow.  The companion of Butler, inadvertently
permitted to escape, carried the news of Butler's death and the manner of it to the
Cherokee nation, and they in retaliation committed many acts of revenge and
cruelty, notwithstanding Governor Martin made every reasonable effort to preserve
the peace.  The Governor was informed that Col. Hubbard had killed Untoola, or
Butler,  without any provocation,' and sent a conciliatory "talk" to the Cherokees.    
He also sent -a letter to Gen. Sevier informing him that he had given directions for
the apprehension of Hubbard and his retention in jail until such time as trial should
be obtainable."

History of Tennessee, Illustrated, The Goodspeed Publishing Company, 1887