Hi Bruce O, could you investigate:
Euing#334 ("Sir Walter Sailing in the Lowlands. Shewing how the famous Ship called the Sweet Trinity was taken by a false Gally, and how it was again restored by the craft of a little Sea-boy, who sunk the Gally; as the following song will declare"./ To the tune of, The Sailing of the Lowlands. Printed for J. Conyers, at the Black-Raven the first shop in Fetter-Lane next Holborn, London.
From what I'm reading, the younger version (Sir Walter Raleigh Sailing in the Lowlands, circa 1685) supplanted the older (long title above) which seems to have not been in wide circulation, in it's original form, in popular tradition.

Bruce, this I'm taking from the forewords to the song & source references Stuart Frank uses when he says in the original form it's circa 1635.
If you can clear up anything by finding Euing could you post it. Thanks Bruce. Barry

Robin, hopefully more to come, I trust in Bruce.