(Lachmann also tried to apply Analyst principles to the mediaeval German Nibelungenlied.) Kirchhoff's 1859 edition of the Odyssey argued that the Ur-Odyssey had comprised just books 1, 5-9, and parts of 10-12, that a later phase had added most of books 13-23, and a third phase had added the bits about Telemachos, and book 24.
Kirchhoff's 1859 edition of the Odyssey proposed that the original version of the Odyssey consisted of only books 1 through 9, with later additions to include books 13-23 and a final phase adding the story of Telemachos and book 24.