<Table> <Tr> <Th_colspan="2"> "The Legend of Sleepy Hollow" </Th> </Tr> <Tr> <Td_colspan="2"> "Ichabod Crane pursued by the Headless Horseman", by F.O.C. Darley, 1849 </Td> </Tr> <Tr> <Th> Author </Th> <Td> Washington Irving </Td> </Tr> <Tr> <Th> Country </Th> <Td> United States </Td> </Tr> <Tr> <Th> Language </Th> <Td> English </Td> </Tr> <Tr> <Th> Series </Th> <Td> The Sketch Book </Td> </Tr> <Tr> <Th> Genre (s) </Th> <Td> Speculative fiction </Td> </Tr> <Tr> <Th> Published in </Th> <Td> The Sketch Book of Geoffrey Crayon, Gent . </Td> </Tr> <Tr> <Th> Media type </Th> <Td> Hardback & Paperback </Td> </Tr> <Tr> <Th> Publication date </Th> <Td> 1820 </Td> </Tr> <Tr> <Th> Published in English </Th> <Td> 1820 </Td> </Tr> <Tr> <Th> Preceded by </Th> <Td> "The Angler" </Td> </Tr> <Tr> <Th> Followed by </Th> <Td> "L'Envoy" </Td> </Tr> </Table> <Tr> <Th_colspan="2"> "The Legend of Sleepy Hollow" </Th> </Tr> <Tr> <Td_colspan="2"> "Ichabod Crane pursued by the Headless Horseman", by F.O.C. Darley, 1849 </Td> </Tr>

What is the original story of the headless horseman