Can't remember for the life of me which albuum But I remember MacColl singing one of the few Broadsides that stuck in my mind down the years to this air

When Henry the Second, not Henry the First
With vexations and poxes was impotent cursed
The court gathered round and they thought up a plan
To produce him a son in a Brass Warming Pan
Derry down....

Then to work went the church on her majesty's womb...
With prelates and priests and pontiffs from Rome.... etc

Political satire at it's very highest as far as I'm concerned

Peggy's idea of song families didn't get much of an airing here - much good research seems to flounder on the rocks of sme people's disinterest in the work of others nowadays, but it makes sense to me
I've been doing a great deal of work on Child ballads recently and have been struck how many of them, rather than being pinned down to a specific date, have been around forever - Hind Horn's roots in Homer, for instance
I was stunned to discover that 'Get Up and Bar the Door' had its counterpart in Ancient Egypt as a story of fig stealing and tomb raiding
I see no reason that the same couldn't be applied to evolving tunes and there is no reason on earth that the Henry Martin tune could not be a close relation of this one (rejected out of hand here)
Trying to pin these tunes and songs down and put earliest dates any any of these songs (and tales) is to put bridles on wild horses
I think it also puts bridles on our chances of understanding our traditions
Tunes (and songs) must have started somewhere but it's doubtful we'll ever know where for certain

Incidentally, I came across a which of McGinn's 'Forman O'Rourke in an old folk magazine which gives 'Derry Down' as the source of the air
There you go...!
Jim Carroll