I wrote here about Simon O’Regan’s passenger-carrying screw steamer tried on the Grand Canal in Dublin in 1850. I am grateful to John Ditchfield for pointing me to an article about what happened next: steam trials on the Newry Canal in 1850, but this time with a lumber (freight) boat.
I would welcome more information about Simon O’Regan or about the use of steam power on the Newry Canal.
Irish waterways history 