Bubblyrat just put

"If in doubt, look at Wikipedia."

Most of us, if we say that, say it with a sense of irony.

Out of interest, of all sovereign countries, Ireland is the one where the rules for honorary gongs are different. Otherwise, pre independence gongs and historic titles would have to be nullified. (You only have the gong when alive, but the title outlives you.) In that respect, Ireland has a status that is not the same of UK and The Commonwealth, but Irish honoraries can use title, according to Debretts.