Hi Neil
The National Archives holds over 45 works by one Thomas George Glover (and copies can be purchased) - painted from all over New Zealand, Sydney, Brisbane, Melbourne, Tasmania and Indonesia. Seems Tom Glover was a bit of a wanderer in his time, but a wonderful artist. His sketches and watercolours give a brilliant insight into the areas in the late 1870's - they're absolutely fantastic.
Could it possibly be Thomas George Tandy who later became known as Thomas George Glover? I have absolutely no idea, but what a mind boggling concept? I can't find any information on this artist as to when he was born or died (at least not in NSW and he doesn't appear to have died in NZ either). I can find plenty of information about his art, and there are plenty of his sketches and watercolours to view online.
As you say - it might have nothing to do with anything - but entirely possible if he was born in NZ about 1850 - and the paintings were all done around 1878-1879?

?? Who knows? Clutching at straws is all I got at this point...

Worth eliminating him if we can find out a bit more about him.
Cheers
Caryn