"Two slaves owned by Purcell, Tony and James, worked at the Capitol along with Hoban's Harry."
Quote from Slave Labor in the Capital, page 107
When making copies of payrolls I was unable to get the whole document which meant I often didn't show who signed for receipt of wages. That is one way to tell who owned the slaves listed in the payroll.
Fortunately the National Archives put a similar payroll on-line to answer queries prior to Obama's Inauguration in 2009 about whether slaves worked on the public buildings.
The scan of that June 1795 payroll shows that Redmond Purcell signed for Tony's wages. The scan of the photocopy I made of a similar August 1795 shows more clearly that Harry's name was prefaced with "negro" which is how slaves were designated in many payrolls.