This is probably totally irrelevant, but when I first heard the song, it had the standard two verses:

'Down by the Sally Gardens...
and
'In a field by the river...

But it also had two verses by A E Houseman:
'When I was one-and-twenty
    I heard a wise man say,
'Give crowns and pounds and jewels
    But not your heart away;
Give pearls away and rubies
    But keep your fancy free.'
But I was one-and-twenty,
    And so did not agree.

When I was one-and-twenty
    I heard him say again,
'The heart out of the bosom
    Was never given in vain;
'Tis paid with sighs a plenty
    And sold for endless rue.'
Now I am two-and-twenty,
    And oh, 'tis true, 'tis true.

And I always thought this was a nice bit to have on the end of a relatively short song.

Tom