Here's another version, from the 1978 album "The New Land" by Touchstone (featuring Triona Ni Dombhnaill after her Bothy Band days). The liner notes say they found the words in an old book and made up their own tune.

JACK HAGGERTY
From the singing of Touchstone ("The New Land")

I'm a heart-broken raftsman, from Greenville I came,
All my virtue's departed, with a lass I did feign,
From the strong darts of Cupid I've suffered much grief,
And my heart's broke asunder, I can get no relief.

Of my troubles I'll tell you without much delay,
Of a sweet little lassie my heart stole away,
She's a blacksmith's fair daughter on the Flat River side,
And I always intended to make her my bride.

I worked on the river where the white waters roar,
And my name I engraved on the high rocky shore,
I'm the boy who stands happy on the dark whirling stream,
But my thoughts were on Molly, she haunted my dreams.

I gave her fine jewels and the finest of lace,
And the costliest muslins her form to embrace,
I gave her my wages all for to keep safe,
I deprived her of nothing I had on this earth.

While I worked on the river I earned quite a stake,
I was steadfast and steady and ne'er played the rake,
For on camp flat and river I very well know,
That they call me Jack Haggerty, the pride of the town.

'Til she wrote me a letter which I did receive,
And she said from her promise herself she'd relieve,
For to wed with another she'd a long time delayed,
And the next time I'd see her she'd no more be a maid.

To her mother Jane Tucker I laid all the blame,
For she caused her to leave and go back on my name,
For to cast off the riggings that God was to tie,
And to leave me a rambler 'til the day that I die.

So come all ye bold raftsmen with hearts stout and true,
Don't trust to a woman for you're beat if you do,
But if you do meet one with the darkest of curls,
Remember Jack Haggerty and the Flat River girl.

^^