Genie wrote
"and then set to the tune of English pub song (?) To Anachreon In Heaven."
Almost a pub song; actually the 'anthem/song'' of "The Anachreontic Society", which was a bunch of blokes that met regularly in the Crown and Anchor (in the Strand, in London?) between about 1770 and 1790.

It was with some surprise that I found that the Anachreontic Society was brought to Australia by an ancestor of mine (John Piper) when he was an Ensign in the NSW Corps. Before Bob reminds us all, this was the Rum Corps. When I worked at Old Sydney Town (a bit like an Australian counterpart to Williamsburg) I was able to get quite a rise out of visiting Americans with both the song and the fact that "The Star Spangled Banner" only became the US National Anthem in 1931/32.

Cheers, Rowan