Well, the right name, Ouigoudi, if it had been continued as the name of the settlement, would be styled an enchorial name. St. John is an imported name, having been taken from the river to which the name was given by deMonts and Champlain in 1604 because they discovered it on St. John the Baptist's Day.
The inscription of the Rosetta Stone is written in hieroglyphics and in enchorial letters, with a Greek translation.