I have a version of this song by the Dubliners where they have added 2 verses I think. It goes like:

I offer you nothing of silver or land,
What man can determine the price of your hand
But gin ye can say we'd be richer by far
Oh walk by me side sweet Tibbie Dunbar

Oh wilt thou become a poor beggars lady
To sleep in the heather rolled up in my plaidie
The sky for a roof and your candle a star
Oh walk by me side sweet Tibbie Dunbar...

Anyones got the right lyrics for these verses.
I'm not quite sure about it?

Hagard.