The Rev. Father Bonaventure Hammer, O.F.M., was a priest and author of the nineteenth and twentieth centuries. His The Fourteen Holy Helpers: Early Christian Saints Who Are Powerful with God was compiled to inspire all the faithful to invoke St. George, St. Blaise, and the rest of the fourteen "Holy Helpers". Father Hammer's work was originally published in 1909 by the Benziger Brothers, New York, with the Nihil Obstat and Imprimatur. It was subsequently reprinted in 1995 by TAN, with the addition of footnotes.