Clement Clarke Moore test that Livingston was the more likely author. General A Visit from St. Nicholas Clement Clarke Moore Clement Clarke Moore (July 15, 1779 – July 10, 1863) was a writer and American Professor of Oriental and Greek Literature, as well as Divinity and Biblical Learning, at the General Theological Seminary of the Protestant Episcopal Church, in New York City. The seminary was developed on land donated by Moore and it continues on this site at Ninth Avenue between 20th and 21st streets, in an area known as Chelsea Square. Moore's connection with the seminary continued for more than 25 years.
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