As remarked upon in a previous post :Get Up ,Jack ,John, Sit Down" Written by Edward Harrigan and David Braham for the Variety Theatre sketch "Old Lavender. There were two versions of "Old Lavender" - Get Up, Jack" was written for the second version. I have a private recording of the song made by Edward Harrigan's son William. About as close to the original version as one can hope to get.