His later publications included Astoria, The Adventures of Captain Bonneville, and the travel sketches A Tour on the Prairies.  
While in London, he met Sir Walter Scott and began his own translation of the folktale "Peter Klaus the Goatherd."  His later publications included Astoria, The Adventures of Captain Bonneville, and the travel sketches A Tour on the Prairies.  Upon his return to the U.S. he completed the multi-volume Life of Washington, his first significant writing since some sketches he penned on the Alhambra while he was U.S. minister to Spain.  At this point he had already introduced Launcelot Langstaff, the first of his pseudonymous characters, in the Salmagundi Papers.  FTP, name this man who also created Diedrich Knickerbocker and Geoffrey Crayon and wrote "Rip Van Winkle" and "The Legend of Sleepy Hollow."
While in London, he met Sir Walter Scott and began his own translation of the folktale "Peter Klaus the Goatherd."  
Washington Irving