Are you trying to make a complete arsehole of yourself Dick?
Lloyd published the song in 1952, MacColl used it for Sweet Thames in the latter half of the 1960s - you could have found this out for yourself - the song was doing the rounds of the revival as early as the early 1960s when it was included on The Iron Muse in 1963.
MacColl used and adapted traditional tunes for most of his songs, as did many songwriters - discussed ad-nauseum on this forum.
Where on earth does "economical with the truth come in anywhere?
Stop sniping at dead singers
No more from me -
Jim Carroll