LR - what you have is, indeed, the 1905 Edition for which the musical editor was Cecil Sharp. The name of the song changed with this edition, but it is the same text and tune and it retained the same number in the book.

I'm not sure that I can add greatly to what has been said above. The tune is that sent to B-G by Octavia Hoare as heard from S.M. Walker at St Enoder '... an old Cornish Parson.' She only sent four verses and the published song is a composite from these, from other singers, and from printed texts. Oh, and the Roud Number is 18829 if you want to look at other versions.

Martin