Well, Burke, it was McGrath of Harlow, not I, that expressed doubts about the singability of the Caswall text to the Portuguese Hymn/Adeste Fideles tune. I merely supplied him (and us all) with an alternative that I knew was explicitly linked with the Caswall text. But I must admit that when I try to sing the Caswall to the usual tune it is, as the McGrath said, a bit of a bugger (though I think that may be harsher language over where he is than here). It does not scan well to it. Not impossibly, but far from easily (and, I'm afraid, far from attractively to my mind's ear). So I shall continue to use Barnby for Caswall and save Adeste Fideles for Oakeley and the original. I've got a Lutheran hymnal from the fifties at home; I'll have to check and see what it gives.

In my online hymnal there's a page on the history of the song from the viewpoint of the Esperanto versions, which contains this passage:

La Esperanta versio de Butler, kaj la unua kaj kvara strofoj de la versio de Milsom, sajnas bazitaj sur la angla versio de Oakeley au, en la kazo de Butler, eble rekte sur la latina teksto de Wade. La strofoj 2a, 3a kaj 5a de Milsom, aliflanke, sajne bazigis sur alia angligo, malpli proksima al la latinajo, farita de William Thomas Brooke (1848-1917).

which is to say

Butler's Esperanto version, and the first and fourth stanzas of Milsom's, seem to be based on the English version of Oakeley or, in Butler's case, possibly directly on Wade's Latin text. Stanzas 2, 3 and 5 of Milsom, on the other hand, seem to have been based on another English translation, less close to the Latin, made by William Thomas Brooke (1848-1917).

I believe this is the first mention of Brooke's translation in this thread. The version in The Cyber Hymnal is an amalgamation of Oakeley and Brooke (seven verses, of which 1-3 and 7 are Oakeley's, 4-6 Brooke's, I think).

Liland