St. Alphonsus Maria Liguori was born in Naples. He was a doctor of canon and secular law. Leaving his profession as an attorney, he was ordained a priest and founded the Congregation of the Most Holy Redeemer on November 9, 1732.

Concerned about the religious life of the people, he devoted himself to preaching and the apostolate of the pen. His most important works concern moral theology in which he is considered a master. As bishop of St. Agata managed his diocese with great zeal. Depressed by his illness and age, he asked to be released from this office. He returned to his brothers and died in Pagani on August 1, 1787.

He was beatified by Pius VII on September 15, 1816 and canonized by Gregory XVI on May 26, 1839. Pius IX proclaimed him a doctor of the Church on March 23, 1871, and Pius XII appointed him patron of confessors and moralists on April 26, 1950.

The liturgical memorial falls on August 1.