The set of Fause Foodrage in question (Child 89C) came from the Harris MS (No. 18, fol. 22). Mrs Amelia Harris learned it at around the age of 8 from her nurse, Jannie Scott, in Perthshire, c.1790. Her daughter wrote down her mother's texts and some tunes; when Child wrote, the manuscript was in the possession of Harvard College Library. She had only four verses. Her set is in the DT, taken from a record made by Hermes Nye, who for unknown reasons of his own called it neither by Child's group title nor the one usually given it, Eastmuir King, but instead re-named it  King o' Luve.

The tune appears in Child V, p.416; there is a tune for Willie o Winsbury on page 418, which is presumably the one Andy Irvine intended to copy. Sadly, the error has resulted in a lot of people believing that the song, as recorded by Sweeney's Men, is Irish; it isn't. It is Scottish, as is the text they used, which -so far as I can recall- is mainly Child's version A. Other versions of the ballad have been found in Ireland, of course, as also in England, the USA and Canada.

I have no idea at all where Archie Fisher comes in. Bronson comments that " the Harris tune is of the Æ / D plagal variety, and belongs to a type which is found with several other Scottish ballads; Hind Etin (No. 41), Child Waters (No. 63), Child Maurice (No. 83), Young Johnstone (No. 88), Jellon Grame (No. 90), Sir James the Rose (No. 213)."