William Ashley "Billy" Sunday (November 19, 1862 -- November 6, 1935) was an American athlete who, after being a popular outfielder in baseball's National League during the 1880s, became the most celebrated and influential American evangelist during the first two decades of the 20th century. (Quoted from: William G. McLoughlin, Jr., Billy Sunday Was His Real Name, Chicago: University of Chicago Press, 1955). By 1917 he was considered by many the greatest revivalist in American history, perhaps the greatest since the days of the apostles. - Wikipedia.
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Book data: Open Library