Murder of John Henry Boller
Stewart and his two companions caught up with and waylaid Boller about a mile from Boonville. They demanded his money, and Stewart reached for a watch Boller was carrying. Instead, of turning over his money and valuables, though, Boller resisted and started to drive on. Stewart promptly opened fire, hitting Boller four or five times. The bushwhackers then robbed him and also robbed another old man who happened along.
After he was robbed, Boller managed to drive on into Boonville, where a resident noticed his weak, bloody condition and took him into his house. Boller, however, died almost as soon as he got inside. The local militia was notified of the incident and immediately started in pursuit of the three bushwhackers. They overtook Sloan, and one of the Union soldiers shot him in the side of the head. Taken into custody, Sloan did not die of the wound but was left blind by it.
Meanwhile, Stewart and Carter escaped, at least temporarily. Carter and four other guerrillas were killed by Federal soldiers in Howard County on September 12, and Stewart was finally killed by a cattle drover on November 11 at Old Franklin in Howard County just across the Missouri River from Boonville when Stewart attempted to rob the cattleman.
On December 5, 1864, Louisa A. Boller filed an affidavit with officials at Boonville swearing that she was the widow of John Henry Boller, stating that his death had left her destitute and without means of support, and asking that she be given an allowance as compensation for his death. She swore that she had never given aid to anybody in rebellion against the U.S. and had, to the contrary, always been a strong Union woman. Whether any aid was given to Mrs. Boller is unknown.