Machen, J. Gresham: - J. Gresham Machen (1881-1937) was one of the most colorful and controversial figures of his time, and it is doubtful that in the ecclesiastical world of the twenties and thirties any religious leader was more constantly in the limelight. Machen was a scholar, professor at Princeton, and a Westminster Seminaries, church leader, apologist for biblical Christianity, and one of the most eloquent defenders of the faint in the twentieth century.