I remember some of it, we used to sing it at school, I think. I can't do line breaks yet.

Did you not see my lady, go down the garden singing,
blackbirds and songbirds silent, to hear the alleys ringing.

Oh saw you not my lady, out in the garden there,
shaming the rose and lily with a glory of golden hair.

Though I am nothing to her, though she must rarely look at me,
though I may never woo her, I'll love her till I die.

I think the first verse is repeated. A fine example of the British class system. A lovely song, though. Hwyl, Bron.