by, I think, John McGettigan & His Irish Minstrels But I'm not sure

And there was an old woman and she lived in the woods
A weila weila waila
There was an old woman and she lived in the woods
Down by the River Saile

She had a baby three months old
A weila weila waila
She had a baby three months old
Down by the River Saile

She had a penknife long and sharp
A weila weila waila
She had a penknife long and sharp
Down by the River Saile

She stuck the penknife in the baby`s heart
A weila weila waila
She stuck the penknife in the baby`s heart
Down by the River Saile

Three loud knocks came knocking on the door
A weila weila waila
Three loud knocks came knocking on the door
Down by the River Saile

"Are you the woman who killed the child?"
A weila weila waila
"Are you the woman who killed the child?"
Down by the River Saile

"Yes I'm the woman
Yes I'm the woman
Yes I'm the woman who killed the child"
A weila weila waila
"Yes I'm the woman who killed the child"
Down by the River Saile

They took her away and they hung her by the neck
A weila weila waila
They took her away and they hung her by the neck
Down by the River Saile

And that was the end of the woman in the woods
A weila weila waila
That was the end of the woman in the woods
Down by the River Saile