Image 1 of 1: Saint Cajetan of Thiene, Giovanni Battista Tiepolo

Saints and feasts

St. Cajetan

Co-founder of the Theatine Clerks Regular

Cajetan helped renew Catholic priestly life through prayer, poverty, reverent worship, and care for the poor. His Theatine reform began with personal holiness and confidence in divine providence.

Sources

The life below remains the existing Butler-based reading, with its edition citation. The profile preserves the feast date and source title already listed in the library. Additional personal dates and historical details are shown only when separately documented.

Butler sourceButler's Lives of the Saints, Volume III (July-August-September), August 7, St Cajetan, Co-founder of the Theatine Clerks Regular, Christian Classics 1990, pp. 272-274.

The Catholic Encyclopedia (1912)Franciscus Ragonesi, Theatines, The Catholic Encyclopedia, Volume XIV, Robert Appleton Company, 1912. Modern transcription of the original article.

The reading

ⓘ Butler source

Butler's Lives of the Saints, Volume III (July-August-September), August 7, St Cajetan, Co-founder of the Theatine Clerks Regular, Christian Classics 1990, pp. 272-274.

Cajetan was born of noble family at Vicenza, trained well, and might easily have passed his life in respectable church administration. Instead, grace drew him toward something far harder and better. After legal study he worked at Rome in ecclesiastical service, but even before priesthood he was already turning toward a deeper spiritual life and practical works of mercy. Ordained priest in his thirties, he threw himself into the renewal of Christian life with a seriousness that marks many of the best reforming saints of the age just before and around Trent. He is closely tied here to the Oratory of Divine Love and to the care of the sick and poor, because he did not think reform began with slogans. It began with prayer, personal holiness, service, and a clergy willing to live more apostolically. From that conviction came the foundation of the Theatine clerks regular with Gian Pietro Carafa, later Pope Paul IV.

The Theatine spirit is described simply and strongly: poverty, detachment from benefices and comfort, reverent liturgical life, frequent communion, and priestly seriousness restored in practice instead of merely praised in theory. Cajetan also lived through public disorder and suffered during the sack of Rome, so his reforming life was not carried on in easy conditions. Yet the same notes keep returning in him: gentleness, confidence in divine providence, love of the altar, patience with suffering, and active charity. He was not one of the loud reformers. He was one of the saints who helped make real reform possible by first reforming life, prayer, and priestly conduct. He died in 1547, leaving behind not a large outer empire, but a deep example of priestly renewal joined to mercy.

Historical note

St. Cajetan helped renew Catholic priestly life through prayer and practical charity before and during the Council of Trent.

Questions about this saint

What religious community did St. Cajetan help found?

He helped found the Theatines, a congregation of clerks regular approved by Pope Clement VII in 1524. His companions included Giovanni Pietro Caraffa, Bishop of Chieti, who later became Pope Paul IV.

Why are they called Theatines?

The name comes from Theate, the Latin name of Chieti, Caraffa’s episcopal see. The community brought a shared religious life to the active work of priests.

How did St. Cajetan serve the sick?

He established a hospital for people with incurable illnesses at Vicenza. His concern for the sick accompanied his efforts to renew the clergy through prayer, personal holiness, and faithful ministry.

Source for these reading notes

The introduction and answers are Novena Regina editorial summaries of the older reference below. The brief life above has its own source citation at the top of the page.

Joseph Keating, “St. Cajetan,” The Catholic Encyclopedia, vol. 3 (1908), transcribed at New Advent

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