Sumner Pinkham was born in 1820 in the state of Maine and was raised in Wisconsin. Little is known about his early life. He married Laurinda Maria Atwood on November 4, 1842, in Nebraska.
Pinkham was a powerfully built man who stood six feet two inches tall with a barrel chest and prematurely white hair that aged his appearance beyond his years. He was also a radical Republican, a fervent Unionist, an ardent abolitionist which did not sit well with many of the men of the Boise Basin mining camps who were predominantly Democratic.
At the time of his arrival, Idaho was still a part of Washington Territory and the Boise Basin was located in Idaho County, of which, Florence was the county seat. Because Florence was remote from the new mining basin, the Washington Legislature established Boise County on January 29, 1863.
The Governor of Washington assigned commissioners and officers to the newly established county, one of which was Sumner Pinkham, who would serve as the County Sheriff. When Congress created Idaho Territory on March 4, 1863, Boise County exceeded the other counties in both area and in population. Those in office in Boise County, including Sumner Pinkham, retained their positions until the territorial government could be officially organized. In August 1863 Pinkham appointed Orlando “Rube” Robbins, who shared his political opinions, as his deputy. Robbins would later make himself known as one of Idaho’s greatest lawmen.
With the Civil War raging in the East, the area miners polarized around the Union and Confederate causes. Fueled by whiskey, Northern and Southern sympathizers often bloodied one another with fists, knives, and sometimes guns as they used force to show their opinions. Many an evening, both Pinkham and his deputy, Rube Robbins, had to lock up a drunken loudmouth who was threatening to punch or shoot to demonstrate his political beliefs to an equally intoxicated opponent.
With his staunch Unionist views, Republican politics, and tough law enforcement, Pinkham soon made himself many enemies in the predominantly Democratic Boise County. However, both Pinkham’s enemies and his most loyal friends were quick to admit that he was a man not to be trifled with when he undertook to enforce the law, which he did so with an iron hand.
One of his most fervent enemies was a Southern gunfighter by the name of Ferdinand “Ferd” Patterson. On one occasion while Patterson was partying with some of his friends in Idaho City, they took unlawful possession of a brewery in Idaho City. The owner called upon a Sheriff Sumner Pinkham to do something about it. When Pinkham entered the brewery he was met with violent resistance. Pinkham and Patterson saw in each other everything they loathed. Patterson was Southerner who was crooked by nature and Pinkham was a Northerner who tended to be self-righteous. In the end, Pinkham was successful and Patterson was arrested.
In October 1864 Pinkham was running for re-election as Boise County Sheriff. In a bitter contest between the Democratic successionists and Republican candidates, Pinkham was defeated by A.O. Bowen by a comfortable majority.
As the last of the ballots were being counted, Ferd Patterson was celebrating when he encountered his old nemesis Sumner Pinkham, who was in a rage. Wasting no time, the lawman took a swing at Patterson, hitting him in the jaw, throwing the gambler off the street and into the gutter. Then Pinkham walked away. Locals expected immediate retaliation from Patterson but it did not occur.
After losing the election, Sumner left Idaho City to visit his dying mother in Illinois. When he returned in 1865, the locals immediately began to speculate that Ferd Patterson and Sumner Pinkham were going to have it out.
After the Civil War’s end, Sumner Pinkham staged a gala Fourth of July party. The crowds were mostly in a festive mood with fireworks blazing and booze flowing. The celebration included a brass band, speeches, patriotic songs, a picnic, and a parade with Sumner Pinkham leading the way through town. For the victorious Yankees, it was a proud day. But, for the sullen Confederate sympathizers, it was not so much, and they heckled the “Blue Bellies” throughout the day. For Patterson, seeing Pinkham leading the parade, was a further stab at his southern loyalties.
Pinkham was singing “Oh, we’ll hang Jeff Davis to a sour apple tree!” when Ferd Patterson yelled out to the ex-sheriff that if he didn’t shut his mouth he’d shut it for him. Pinkham invited him to try and he did. A brief scuffle between the two men resulted in the flag falling into the dust of the street. Some witnesses swore they saw Ferd Patterson spit on it and others attested they heard Pinkham swear he would kill Patterson for that.
Several weeks later, on Sunday, July 23rd, Sumner Pinkham took a hired carriage from Idaho City to the Warm Springs Resort about two miles west of town. Upon his arrival, Pinkham joined a number of his Unionist friends in the saloon where they were heard singing patriotic and anti-Confederate songs.