From the Richmond Sentinel, 4/11/1863, p. 1, c. 7
Execution. – A. C. Webster, a captain under the bogus government of Pierpont, was executed by hanging yesterday at Camp Lee, in pursuance of sentence of Court Martial, for a violation of his parole of honor. He was taken from the prison of the Eastern District at 11 o'clock A. M., and placed in a carriage with his spiritual advisor, the Rev. Mr. Brown, of the Presbyterian Church, and with the executioner. Another carriage contained a number of officials, while Wren's cavalry company composed the escort. On arriving at Camp Lee, the [remainder of sentence is illegible] post were found drawn up in a circle around the gallows. Webster looked very pale, but seemingly endeavored to maintain his fortitude. The minister prayed with him in the carriage, his physical condition, owing to injuries received when he attempted to escape from prison, being such as to prevent his alighting, until the ??? moment. He asked Captain Alexander to extend the time until the latest moment allowed by the terms of the sentence, but only half an hour was granted. At half-past 12 o'clock the prisoner, dressed in the uniform of a Federal officer, was assisted up the steps of the scaffold and placed upon a ??? over the trap. A hat was placed in his hand, which he was to drop as a signal of his readiness. He hesitated a few moments, when the hat dropped from his grasp, and at the same moment the trap fell. Webster's neck was broken, and his death almost instantaneous. He made no remarks while on the scaffold.
There are various crimes attributed to the man who thus suffered an ignominious death, such as murder, bigamy, and horse stealing, but he was only tried for the military offence above stated. His age was about twenty-five years.