In his 'Foggy Dew' compilation Frank Purslow gives an alternative text for 'Pretty Nancy'. He said it's a typical example of alternative texts by some Dorset and Hampshire singers. It begins:

Pretty Nancy of (London) she dwells in our street
She was courted by William who belongs to the fleet
When the trumpet it sounded, to the wars he must go
Which filled her poor bosom with sorrow and woe

Is this closer to what you are after?

--Stewie.