I copied the lyrics above from the booklet of the Folkways album Popular Scottish Songs but they have quite a few poor transcriptions. After listening to MacColl's singing and comparing the lyrics in The Singing Island, this is more of what he actually sang:

FRIENDLESS MARY

Far o'er yon hills where heather grows
I met a lass wi' her lambs and yowes,
The lambs came frisk-lin' o'er the knowes,
And the sun was shining clearly-O.

Says I, “My fair and comely dame,
Would ye be sae kind as tell me your name?
Or tell me the place ye ca' your hame,
For your beauty shines sae early-O.”

“D'ye see yon hoose ahint the green?
This last six weeks I hunny been seen,
Ma mither she clost her twa black e'en,
Sayin', ‘Fair ye weel my Mary-O.’

“D'ye see yon hoose ahint the tree?
When I was born me faither he deed,
Ma mither was left tae be ma guide
And she ca'ed me Friendless Mary-O.”

“If ye'll consent tae come wi me,
And be my bride across the sea,
A braw guid man I'll be tae ye
And ye'll be nae mair Friendless Mary-O.”

“I'll consent tae gang wi ye,
And be a bride across the sea,
A braw guid wife I'll be tae thee
And I'll be nae mair Friendless Mary-O.”