The Quiller Couch set is probably quoted from Scott; I'm not at home and can't check references for a couple of days. At any rate, it shouldn't be considered a variant in its own right.

The Brig o'Dread is dealt with at greater length in one of the less well-known sets, which I posted earlier in this thread, with source. Presumably the above is a rendering into Standard English. Can't say I like the altered line "The Devil take thy soul" too much, though I expect it works well in performance.