St. Castulus statue at Moosburg
|Venerated in||Roman Catholic Church, Eastern Orthodox Church|
|Feast||Roman Catholic Church: March 26; March 27 (Freising, Munich).|
Eastern Orthodox Church: December 18
|Patronage||Shepherds; invoked against erysipelas, lightning, horse theft, wildfires, drowning, cowherds|
A convert to the Christian religion, he sheltered Christians in his home and arranged for religious services inside the palace of the emperor. Among those he sheltered were Mark and Marcellian. He is one of the saints associated with the life and legend of Saint Sebastian.
With his friend Saint Tiburtius, he converted many men and woman to Christianity and brought them to Pope Saint Caius to be baptized. He was betrayed by an apostate named Torquatus and taken before Fabian, prefect of the city.
Castulus was tortured and executed by being buried alive in a sand pit on the Via Labicana. According to tradition, Irene subsequently buried the body of the martyred Saint Sebastian. She was later martyred herself, around 288 AD.
Veneration of St. Castulus
A church dedicated to him at Rome, built on the site of his martyrdom, existed from at least the seventh century.
- Saints, December 18, Justin Popović Archived 2011-11-28 at the Wayback Machine (in Serbian)
- Name bedeutet: der Gewissenhafte (latein.) (2007-03-25). "Castulus (Kastulus) – Ökumenisches Heiligenlexikon". Heiligenlexikon.de. Retrieved 2011-06-27.
- Ebenezer Cobham Brewer, A Dictionary of Miracles: Imitative, Realistic, and Dogmatic (Chatto and Windus, 1901), 11.
- "Santos". ACI Prensa. 2007-07-29. Retrieved 2011-06-27.