Boromir is mentioned in the third and last volume of The Lord of the Rings.
Boromir . He appears in the first two volumes of The Lord of the Rings ( The Fellowship of the Ring and The Two Towers ) , and is mentioned in the last volume , The Return of the King . The Return of the King is the third and final volume of J. R. R. Tolkien 's The Lord of the Rings , following The Fellowship of the Ring and The Two Towers .