Joseph Gales Shelton - Lincoln guard at Ford's?

[Rhatkinson]

I read this article off a DC history twitter feed: http://buff.ly/1zZOSF5 and it states that Shelton was assigned to the White House as a guard during the War and accompanying the President to Ford's on 4/14/1865. The quotes from the story stump me because I cannot find anything but a brief mention of Shelton's death on the bottom right corner of page 13 of the paper. There is nothing else regarding him on the next page.

Regardless, I have never heard Shelton's name mentioned in connection with the night of the assassination, and would guess this is probably not true. I can't even tell if Shelton was DC Police or US Army.

Heath