Alphonsus Liguori

Alphonsus Maria de Liguori was an Italian Catholic bishop, moral theologian, and religious founder, later canonized and named a Doctor of the Church. Born near Naples in 1696 to a noble family, he earned doctorates in civil and canon law at the University of Naples by age sixteen and practiced as a lawyer for several years before leaving the bar after losing a high-profile case.

Ordained a priest in 1726, he worked among the urban poor and rural laborers of the Kingdom of Naples, whom he found largely abandoned by existing clergy. In 1732 he founded the Congregation of the Most Holy Redeemer, known as the Redemptorists, a missionary order dedicated to preaching to the most spiritually neglected populations.

His writings on moral theology, especially the multi-volume Theologia Moralis, sought a path between rigorism and laxism and became standard reference works for Catholic confessors for more than a century. He also wrote widely read devotional books including The Glories of Mary and Visits to the Most Blessed Sacrament, along with hymns still sung in Italian churches such as Tu scendi dalle stelle.

Pope Clement XIII appointed him bishop of Sant'Agata de' Goti in 1762, a post he held until illness forced his retirement in 1775. He died at Pagani in 1787, was canonized in 1839, and was declared a Doctor of the Church in 1871, with the title patron of confessors and moralists added later.

The name Alphonsus is a Latinized form of the Germanic Alfonso, derived from elements meaning noble and ready. He carried it as a bishop who founded a global missionary order.