This text comes from The Book of Scottish Song, edited by Alexander Whitelaw, a historical songbook transcribed on Wikisource and reproduced from the pinned revision linked below.
As I cam' by Loch-Erroch side,
The lofty hills surveying,
The water clear, the heather blooms,
Their fragrance sweet conveying,
I met, unsought, my lovely maid,
I found her like May morning;
With graces sweet, and charms so rare,
Her person all adorning.
How kind her looks, how blest was I,
While in my arms I prest her!
And she her wishes scarce conceal'd,
As fondly I caress'd her:
She said, If that your heart be true,
If constantly you'll love me,
I heed not care nor fortune's frowns,
For nought but death shall move me.
But faithful, loving, true, and kind,
For ever thou shalt find me;
And of our meeting here so sweet,
Loch-Erroch sweet shall mind me.
Enraptured then, My lovely lass,
I cried, no more we'll tarry!
Well leave the fair Loch-Erroch side,
For lovers soon should marry.