20 additional prisoners in the Arsenal ???

[Susan Higginbotham]

There are documents related to Celestino on the Fold3 site. One is dated from the Navy Yard on April 25 and reads, "Receipt for John Celestino to be placed on a monitor for safe keeping."

John Hartranft wrote in his report to General Hancock dated May 1 that he took charge of eight prisoners on April 29. I would guess one of those was Celestino, as Mary Surratt wasn't brought over until the evening of May 30, according to the same letter.

Edit: John Elliott and Barry Cauchon have O'Laughlen, Powell, Arnold, Hartman Richter, Atzerodt, Spangler, Celestino, and Herold being taken from the monitors to the Arsenal on April 29. That would correspond with the eight prisoners mentioned by Hartranft. Mudd was transferred from the Old Capitol on May 4.