Did This Guy Write the Book of Mormon?

In late October of 1830, roughly six months after the publication of the Book of Mormon, four LDS missionaries â?? including Parley Pratt, who had known Sidney Rigdon previously â?? came through Kirtland, Ohio, where Sidney had built up a communal church, and introduced him to both the Book of Mormon and Mormonism. Rigdon was a devout and studious preacher of the Bible, even naming one of his sons after the great 14th-century reformer and Bible translator John Wycliff.