A Visit from St. Nicholas concludes that Livingston is the true author of the classic work. Notes Further reading A Visit from St. Nicholas "A Visit from St. Nicholas", more commonly known as "The Night Before Christmas" and "Twas the Night Before Christmas" from its first line, is a poem first published anonymously in 1823 and later attributed to Clement Clarke Moore, who claimed authorship in 1837. Some commentators now believe the poem was written by Henry Livingston Jr.. The poem has been called "arguably the best-known verses ever written by an American" and is largely responsible for some of the conceptions of Santa Claus
A Visit from St. Nicholas family lore gives credit to their forebear rather than Moore, but there is no proof that Livingston himself ever claimed authorship, nor has any record ever been found of any printing of the poem with Livingston's name attached to it, despite more than 40 years of searches. Advocates for Livingston's authorship argue that Moore "tried at first to disavow" the poem. They also posit that Moore falsely claimed to have translated a book. Document dealer and historian Seth Kaller has challenged both claims. Kaller examined the book in question, "A Complete Treatise on Merinos and Other Sheep", as well as