Here's my first transcription of the tune. I was up early today and I'm starting to flag for checking (it's nearly 2am here!). I'll try and check it a bit more closely tomorrow. I took the first of the recordings that Joe linked, transposing from original Eb to C for ease of reading.

Mick

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X:1
T:Caplin Time
C: From the singing of The Dunne Family of Newfoundland & Labrador
Z: Mick Pearce
L:1/4
M:4/4
I:linebreak $
Q:1/4=104
N: Original in Eb
K:C
z> C C D| E2-E> E| E< G A> G| D4 | z4| $
w: In Bos-ton town_ an old man died one day.
B> B B/ c B/-| B3/ A G F/| E4| $
w: Dream-ing of his home_ so far a-way.
z> G G c| e3 e| f e d c| A4| $
w:He must have known his words were all in vain.
z f e d| c3 A/G/| G c d> c| c4||$
w: Oh, take me home when it's Cap-lin time a-gain.
"^Chorus"z> D C/C/ D| E3 D/D/| E G A> G| D4-| $
w: I wan-na go back when it's Cap-lin time a-gain
D2 G/ G A/| B3 B/c/| B> A G> F| E4| $
w: _ I want to walk in the soft-ly fall-ing rain.
z G G c| e3-e/ e/| f> e d c| A4| $
w: And hear a-gain_ the lone-ly sea-gulls cry.
z f e d| c3 A| G> c d> c| c4 |]
w: Oh, take me home once more be-fore I die.