Tragically, Texas Jack died at age 33. He and his wife were residing in Leadville in the spring of 1880 when he became ill with a bad cold. From Buckskin and Satin biographer, Herschel C. Logan.
After all, what was a mere cold to one who had endured all sorts of exposures and was accustomed to the vicissitudes of frontier life. It was only upon the insistent urgings of his devoted wife and of his friend Major T. C. Howard, at whose home they were living at the time, that he finally consented to take to his bed, firmly convinced that in a day or so he would be back to normal. Such was not to be, for in the delay the cold had turned into pneumonia and that into quick consumption. In spite of all the skilled physicians, headed by Dr. Henry Cook, could do, Texas Jack did not respond, but lapsed into unconsciousness. At 7:30 on Monday morning June 28, 1880, the beloved plainsman, scout, Indian fighter, guide and actor closed his eyes in the sleep from which none ever awakens.
Services were conducted in the Tabor Opera House. John Baker "Texas Jack" Omohundro was buried in the Evergreen Cemetery in Leadville. Logan captures well the extraordinary day.
The services were conducted by the Rev. Thomas J. Mackay, Episcopal Chaplain of the Tabor Light Cavalry. A choir composed of members of Fay Templeton's opera company, which was playing in Leadville at the time, furnished music for the occasion. Following the obsequies at the Opera House, which was attended by all who could crowd into the spacious show place, the funeral cortege took its leave. Led by a fifty-piece brass band, followed by Jack's former comrades of the Tabor Light Cavalry under the leadership of the Hon. H. A. W. Tabor, then Lieut. Gov. of Colorado, and Rev. Mackay, the procession moved up Harrison Avenue to Eighth Street and thence westward to the newly plotted cemetery. At the graveside, Mr. Tabor made a few closing remarks complimentary to his friend Texas Jack. The service was concluded by the firing of a military salute and the sounding of taps, a tribute to J. B. Omohundro, soldier of the Confederacy.
Twenty-eight years later, Jack's friend William Cody placed a gravestone on Jack's grave and gave a moving tribute that can be read here.
Josephine no longer performed in the theater after Jack's death. She returned to her home in Massachusetts and lived there in seclusion until her death at age 39 from cancer.