That's a good question which I can't answer right now. But let's begin with a valid question about reference in fiction. As I have argued in earlier posts (e.g. here) there is a perfectly valid sense of 'refer to' where it takes an fictional accusative. For example, we can ask who the phrase "The Lord of the Rings" refers to. And the Wikipedia page on The Lord of the Rings even gives us an answer, saying that "the title of the novel refers to the story's main antagonist, the Dark Lord Sauron".
Equally, we can ask what the ‘Two Towers’ in the Lord of the Rings are, since there are so many towers in the book. Some of these are:
- Orthanc, the black tower of Isengard in the West, the stronghold of the wizard Saruman.
- Barad-dûr, the fortress of Sauron in the heart of Mordor in the East
- The Tower of Ecthelion, the White Tower of the city of Minas Tirith, on the Western border of Mordor
- The Tower of Black Sorcery in Minas Morgul Vale, on the other side of the border from Minas Tirith
- The Tower of Cirith Ungol above the Morgul Pass on the northern side of the Morgul Vale.
22 January 1954: It must if there is any real reference to volume II refer to Orthanc and The Tower of Cirith Ungol . But since there is so much made of the basic opposition of the Dark Tower and Minas Tirith, that seems very misleading. There is, of course, actually no real connecting link between Books III and IV, when cut off and presented separately as a volume*.This is because the first book of the Volume deals with Saruman and the second book of the Volume deals with Frodo and Sam's passage into Mordor and his capture in the Tower of Cirith Ungol. Note his use of the term ‘refers to’. On the other hand, in his original design for the jacket of ''The Two Towers'' the Towers are certainly Orthanc and Minas Morgul (Orthanc is shown as a black tower, three-horned, with the sign of the White Hand beside it; Minas Morgul is a white tower, with a thin waning moon above it, an allusion to its original name, Minas Ithil, the Tower of the Rising Moon). In yet another letter Tolkien says the question can be left undecided, and “The Two Towers” could refer to three possible pairs: Isengard/Barad dur; Minas tirith/Barad dur; or Isengard/Cirith Ungol.
More later, but clearly the question of which character is being referred to involves authorial intention. There is a lovely discussion on a Tolkien fansite here. Here also is a link to The Battle of Evermore, a Tolkien-inspired number by the English rock group Led Zeppelin. Some people think that the song may be referring to the Battle of Pelennor Fields.
* From Hammond, Wayne G, Douglas A. Anderson, JRR Tolkien: A Descriptive Bibliography, New Castle, Delaware and Winchester : Oak Knoll Books and St Paul's Bibliographies 2002