Errantry is a Hobbit poem which was probably composed by Bilbo Baggins, shortly after his return from the Lonely Mountain in T.A. 2941, and probably having heard Elvish tales of the First Age, but without treating them seriously. The attribution to Bilbo is made because of its similarity to the Song of Eärendil, which is believed to be a version of this poem, transformed and applied to the legend of Eärendil.
While it referred to original Elvish names, they were probably fictitious.
Each stanza is supposed to be read first at speed and then slow down to pronounce words with clarity, with the exception of the last stanza that must begin slowly.
 List of rare words
Below is a partial list of rare and/or obsolete words used in the poem.
- Aerie, or an invention that rhymes on Faerie.
- Paladins, see also Paladin Took II#Etymology.
Tolkien felt the need to compose the poem in an attempt to use the model of the nursery rhyme What is the rhyme to porringer? The meter is his own invention (using trisyllabic assonances or near-assonances) and never wrote another in this style. This fact passed into the legendarium, as the Preface to the Adventures of Tom Bombadil says that Bilbo was probably proud of his meter and used it as a model for Earendil.
By 1950 the poem became famous outside Tolkien's environment and circulated anonymously in print and "folklore": a lady unknown to Tolkien heard it somewhere and was so taken by the words that traced its origin to the English Universities and ultimately to Tolkien, surprising him. Comparing the version the lady knew against the original, Tolkien noticed that the "hard words" are preserved more in the "oral tradition".
 See also
- ↑ J.R.R. Tolkien, The Lord of the Rings, Appendix B, "The Third Age"
- ↑ 2.0 2.1 2.2 J.R.R. Tolkien, The Adventures of Tom Bombadil, "Preface"
- ↑ 3.0 3.1 3.2 J.R.R. Tolkien; Humphrey Carpenter, Christopher Tolkien (eds.), The Letters of J.R.R. Tolkien, Letter 133, (dated 22 June 1952)
- ↑ 4.0 4.1 J.R.R. Tolkien, Christopher Tolkien (ed.), The Treason of Isengard, "V. Bilbo's Song at Rivendell: Errantry and Eärendillinwë"
- ↑ J.R.R. Tolkien; Christina Scull & Wayne G. Hammond (eds), The Adventures of Tom Bombadil, "Commentary"
- ↑ Brothers and Friends: The Diaries of Major Warren Hamilton Lewis (1982), p. 126
- ↑ J.R.R. Tolkien, Donald Swann, The Road Goes Ever On, "Errantry"