founds this:
THE RIVER IS FLOWING

The river is flowing, flowing and growing
The river she is flowing back to the sea
Mother carry me, your child I will always be
Mother carry me, back to the sea
The moon she is glowing down upon me
Sister moon watch over me
Your child I will always be
Sister moon watch over me
Until we are free
The sun he is shining, brightly he is shining
The sun he is shining, lighting the way
Father sun, shine over me
A child I will always be
Father sun shine over me
Until we are free.   


and at http://www.geocities.com/muse_of_swearing/Ophelia.html There seems to be something similar - called the Tragedie of Orphelia - Maide of Denmark.