Verse 1, line 4 "For we ever or never, may we all meet again", immediately reminded me of a song I heard yonks ago from Robin Morton. So I dug out his book "Folksongs Sung in Ulster", and the last song therein is "We May and Might Never All Meet Here Again".

The first verse goes thus:
Kind friends and companions come join me in rhyme,
Come lift up your voices in chorus with mine,
Let's drink and be merry all griefs to refrain,
For we may and might never allmeet here again.

Clearly closely related to the Stromness one in the first verse, though the rest of the verses are quite different.