Recorded in Belfast by Peter Kennedy. Irish variation of Abroad As I Was Walking, a tune published in 1909. Reissued on Topic series Voice Of The People (Vol 6: Come Let Us Buy The License) in a version by senior Turp Brown. There's a Blackwater river both in Ulster and county Wexford.
Mary Doran [Irish traveller as Blackwaterside; recorded during the same session as Winnie Ryan's; BBC recording in the Sound Archive of the British Library]
Paddy Doran [Mary's brother; out on Folktracks by Irish Tinklers Singing Vol III ('58)]
Isla Cameron [for Jupiter]
Bert Jansch [learned it from Anne Briggs, who waited until '71 to record her own version]
Led Zeppelin [elements in instrumental Black Mountain Side; Page learned it from Al Stewart who knew it from Bert Jansch who knew it from Anne Briggs who knew it from Bert Lloyd who teached Briggs the Mary Doran version]
Anne Briggs [knew it through Mary Doran]
Sandy Denny [as Blackwaterside]
Paddy Reilly [idem]
Vanilla Fudge [as Black Mountain Side]
Bonny Light Horseman [as Blackwaterside]
Led Zeppelin with raga elements, just like Bert Jansch-alike Davy Graham in She Moved Through The Fair (also recorded by Anne Briggs).