Cajetan, a co-founder of the Theatines, received the office of protonotary at Rome from Pope Julius II when still quite young. After he was ordained priest in 1516, he left the papal court and dedicated himself entirely to the service of the Lord. With his own hands he cared for the sick. Such zeal did he show for the salvation of his fellowmen that he was surnamed the "huntsman for souls."
In order to raise the standards of ecclesiastical discipline among the clergy, Cajetan founded in 1524 a community of Clerks Regular who were to lead an apostolic life. They were to look with disdain upon all earthly belongings, to receive no income, to accept no salaries from the faithful; only from that which was freely offered were they allowed to retain the means of livelihood. Thus they were to rely unreservedly upon Divine Providence.
St. Cajetan often prayed eight hours daily. He was particularly active during the Breviary reform under Pope Clement VII. He was kind, mild, but above all, humble. He asked God that no one should know the place of his burial. While attending the Christmas celebration at St. Mary of the Crib, he is said to have been given the grace of receiving from Mary the Child Jesus into his arms. During the sack of Rome by the soldiers of Charles V in 1527, he was tortured and cast into prison because he refused to surrender certain church monies which, in fact, he had distributed among the poor. An insurrection filled him with such grief and sorrow that he took sick and died.
~Excerpted from The Church's Year of Grace, Pius Parsch