"O'Fenlon's Hornpipe", in Gaelic "Crannciuil Ui Finnallain", also known as "The Silver Box", "Vincent's Hornpipe" or "Vinton’s Hornpipe" is an Irish hornpipe in B Flat Major. The parts are played AABB. It is a very popular hornpipe found in many printed and manuscript collections under a variety of titles. Samuel Bayard thinks the "Silver Box Hornpipe" (dated c. 1770) is a simple, perhaps early, version of the tune. The hornpipe appears under this title in London publishers Samuel, Ann & Peter Thompson's Twenty-Four Country Dances for the Year 1799. It also appears under this title in the mid-19th century music manuscript papers of Long Island painter and musician William Sydney Mount. Shropshire musician John Moore included it in his 1837–1840 music manuscript as "St. Vincent's Hornpipe". John Burks' music manuscript, dated 1821, has a version (as "Vincent's Hornpipe") similar to the one in Moore's manuscript, and likewise is set in the key of B Flat. All of these titles probably honor Admiral Jarvis, Lord St. Vincent, a contemporary of the celebrated Lord Horatio Nelson and himself a hero of the Napoleonic Wars and the victor of the Battle of Cape St. Vincent. The title "Vinton's", by which the tune appears in the Boston, Massachusetts, publisher Elias Howe's various editions from the mid-19th century on is probably a corruption of the original title honoring Jarvis. Francis O'Neill (1903) prints the tune as "O'Fenlon's Hornpipe" which is also presumably a mis-hearing of the name "Vinton’s Hornpipe." It was printed in Krassen's O'Neill's Music of Ireland (1976), O'Neill's Music of Ireland: 1850 Melodies (1903), Bayard's Dance to the Fiddle (1982) (as "Vinton’s Hornpipe"), Cole's 1000 Fiddle Tunes (1940) (as "Vinton’s Hornpipe") and Phillips' Fiddle Case Tunebook: British Isles (1989).