I remember Nic Jones singing almost the same lyrics 'way back. I don't recall Nic including any Scots words then, however.
The Scots version I have always used begins
"'Twas round about the Mart'nmas time, When green the buds were swellin,
When Sir John Graeme on his daith bed lay
For Love o' Barbara Allen.

He sent his servant thro' the toon
Tae the place whaur she was dwellin',
'O haste ye noo tae the Maister's side,
Gin ye be Babara Allen'