Further to the Hiera/Figuera controversy - the version of the words I have has:
"They remind me of the lights of HYERES" Don't ask me how this is pronounced but it is French so "EYE-AIR" or "EE-AIR"? If you look at a map of the southern coast of France. Toulon is East and slightly South of Marseilles - Hyeres is East of Toulon and les Iles D'Hyeres just off the coast a bit further East.
However, looking at the course of the voyage home from Trafalgar, this makes no sense! Since he refers to Andalusia and Cadiz could it possibly be "JEREZ"?
There is only one way to find out - someone will have to ask Mr O'Connor!
PS I need the tune as I am trying to learn it so if you could oblige? Sorry, I'm always a bit late picking up threads!