Giuliana Cavallini, O.P., was the Director of the Centro Nazionale di Studi Cateriniani in Rome, as well as an editor of St. Catherine of Siena s dialogue and author of additional works on the saint. She purposefully wrote her biography of St. Martin de Porres as a story neither chronological nor critical. Rather, she gathered various episodes taken from the testimony given during the process of his beatification, from people who had known Martin in his lifetime. The completed work received the Imprimatur from Cletus F. O Donnell, and was originally published in 1963. Giuliana Cavallini is also the author of Things Visible and Invisible: Images in the Spirituality of St. Catherine of Siena.

The sons of St. Dominic were the first to preach the Gospel in the land of the Incas. They had shared the perils of the Peruvian adventure with Pizarro in the same boat in which he and his men sailed south through the Pacific. Missionaries of many other orders followed them: Franciscans, Augustinians, Mercedarians, Jesuits. But divine Providence reserved for the first missionary workers the finest fruits of the seed of the Gospel sown between the seacoast and the forbidding heights of the Andes.

Born shortly after the founding of Lima, Martin entered the Dominican Order early in life. There he spent the remainder of his 60 years in complete dedication to his order and the cause of the poor, sick and neglected of Lima while growing to the highest levels of sanctity and humility. The appeal of St. Martin de Porres is universal. Called an apostle of charity, patron of social justice, father of the sick and poor, and helper in hopeless cases, he is a powerful intercessor to those in need.

The close friend of St. Rose of Lima; he became a Dominican lay brother at 15 and spent his life (died at 61) helping those in need. Many great anecdotes telling how he raised the dead; multiplied food; cured the sick; healed wounded animals; visited those in need through bilocation; did extreme penance and gained the name of Apostle of Charity; patron of social justice; father of the sick and poor and helper in hopeless cases.