You would not slumber
If laid at my breast:
You would not slumber.

The river-flood beats
The swan from her nest:
You would not slumber.

And like that quick flood
My blood goes unguessed:
You would not slumber.

Times without number
Has called the wood quest:
Times without number.

As oft as she called
To me you were pressed:
Times without number.

Now you'd not slumber
If laid at my breast
Times without number.

O starling reed-resting,
I’ll rock you to rest:
So you will slumber.

Padraic Colum

http://www.poemhunter.com/poem/the-sister-s-lullaby/