From Body, Boots, & Britches: Folktales, Ballads, and Speech from Country New York by Harold William Thompson (Syracuse, NY: Syracuse University Press, 1939), page 388:

Another of the doleful favorites is The Jealous Lover, otherwise known as Luella or Ella, and by other titles. One of the longest and most poetical versions is this, from the North Country:

Down in the valley lonely where the violets fade and bloom,
There lies our own Luella in a cold and silent tomb.
She died not brokenhearted, or in lingering sickness fell,
But in one moment parted from the home she loved so well.

One night when the moon shone brightly, the stars were shining too.
Beneath her cottage window her treacherous lover drew,
Saying, "Love, come let us wander into the meadows gay,
And undisturbed we'll ponder and name our wedding day."

Deep, deep into the forest he led his love so dear.
Says she, "It's for you only that I have wandered here.
The way is dark and dreary and I'm afraid to stay.
Of rambling I am weary and would retrace my way."

"Retrace your way nor ever no more these fields you'll roam.
So bid farewell to parents, to friends, and to your home;
For in this forest I have you; from me you cannot fly.
No human heart can save you; Luella, you must die!"

Down on her knees before him she pleaded for her life,
But deep into her bosom he plunged the fatal knife.
"O Edwin, what have I done, that you should take my life?
I always have been loving, and would have been your wife.

"Farewell, my dearest parents; you ne'er will see me more,
Though long you wait my coming at your old cabin door.
Dear Edwin, I forgive you." With her last and dying breath,
Her heart it ceased its beating; her eyes were froze in death.

In a version current in Little Falls, the motive for the murder seems to be Emily's refusal to take a walk with Edgar:

"No, Edgar, I am tired, and do not care to roam;
No, Edgar, I am weary and would rather stay at home."
Up sprang her jealous lover, with madness in his eye,
Up sprang her jealous lover, saying, "Emily, you must die!"