Isn't it just as likely that if he'd used Colcord he'd have adopted her "old-time" pronunciation? And isn't it possible that PG pronounced it "Maui"?

I don't think any conclusion can be drawn about anything just from Hugill's pronunciation.

Also, my take on the credit to "Stan Hugill" in his final book is that it's most likely to assert some kind of presumption of copyright. After all, he *did* preserve a previously uncollected tune. The notice tells readers that he didn't get the song from someone else's book.

Again, I don't believe any conclusion can be drawn.

There's no reason to doubt that Hugill learned the words and melody from Paddy Griffiths, who seems to have learned the song before 1890. Whether PG's version was fragmentary and Hugill reconstructed it from Colcord, or whether he altered and elaborated on PG's song to suit his own taste w/o Colcord, I think is unknowable without a very close textual analysis of all versions. And I'm not certain that that would be conclusive either because the texts are fairly short and conventional.

It seems likely that Hugill created the final stanza, in the post-Kipling environment of the 1920s, but even that isn't certain. Maybe PG had sung part of it and Hugill simply filled in some blanks.

Of course, I haven't looked at the various versions closely in a number of years.