I was given these words at a session last night and asked if I knew the rest. I didn't but I'm intrigued, can anyone help?

Oh who'll go over the downs so free
Oh who will with me ride
Oh who'll go over the downs so free
Fetch a blooming bride
Her mother's locked the door
Her father keeps the key
Neither door or bolt will part
To let my true love free.

Thanks for any help
KJ