Eight studies on the life and work of Marcus Marulus of Split (1450-1524) are assembled here under the title Catholic Advocate of the Evangelical Truth. They focus on what Marulus and Martin Luther have in common; on Marulus's Carmen, "Christ Speaking from the Cross"; on his metaphors for "empires" in his Latin works and in comparison with the contemporary German Humanist Ulrich von Hutten; on Marulus's open letter to the pope; on his reading of the four volumes of the illustrated Biblia Latina and samples of the marginalia which he entered; on his understanding of the "Rock" in Matthew 16:18; on the "Tree of the Cross" and other early Latin poetry; and on his view of Christian-Muslim relations.