But where did you get it?

The song does seem to have appeared on broadsides localised to Scarborough; Ingledew, The Ballads and Songs of Yorkshire, 1860, 219, prints a text as Scarboro' Sands, with the comment "From a broadside penes me." This should not be confused with another Scarborough Sands -of which there is an example in the DT- which is unrelated.

The Dransfields seem to have got their text from a set noted by Cecil Sharp from Tom Gardiner, Blackwell, Worcestershire, in September 1909, which is almost identical; but their tune wasn't very like his, nor much like the few other examples I've seen.