In the song (full words in thread here )who was Louise/Louisa?
Presumably, he moved on since divorcing Josephine.

"Louise as she weeps, from her husband is parted
And she dreams while she sleeps and awakes broken-hearted
There is none to console her, though there's many would be with her
While alone she does mourn when she thinks of St. Helena"

I sang the song and someone asked the question, and you sort of feel that you ought to know what you're singing about.