Ah, that site.  It could be really useful if it was even slightly formatted, and the stanza numbers in a halfway rational position!  My Italian is very rudimentary indeed, but I can at least say that this is the text published by Bishop Percy in his Reliques; Child didn't use it because it had been "polished up" a bit.  You might like to have a look at the  Bodleian Library Broadside Collection,  where there are several editions of the ballad, in particular this one:

True love requited: or, The bailiff's daughter of Islington  Printed c.1700 for J. Walter, at the Golden Ball in Pye-Corner, London.

Sorcha forgot to mention that there are two tunes in midi format with the Digital Tradition file, here:

The Bailiff's Daughter of Islington

Malcolm