"Tramps & Hawkers" must be one of the most popular tunes (along with "Sweet Betsy from Pike") for zipper songs, where you zip out the old words and add your own. Ewan MacColl used it for "England's Motorway", it was used for "The manchester Martyrs" (Fenian song of the 1850's), also "The River Roe" in Joyce; Tommy Armstrong used it for his most famous song "The Durham Lockout" (1892) and there are several BC songs to it, too.