In Catholic tradition, patron saints are holy men and women whose lives and intercession are considered especially suited to particular needs, groups, or situations. The Church's practice of invoking saints reflects the doctrine of the Communion of Saints — the belief that the faithful departed remain united with the living in the one Body of Christ and can intercede before God on our behalf.
The designation of a patron saint for "Oaths and Treaties" reflects centuries of Catholic popular devotion and, in many cases, formal proclamations by popes or bishops recognizing a saint's particular connection to this intention through the circumstances of their life, death, or documented miracles.
Formally proclaimed patronage — sourced from canonized saints in the Roman Calendar.
Saint Pancras is invoked as patron of oaths and treaties. Saint Pancras (Latin Pancratius) is a Roman martyr who, according to a tradition recorded in the sixth-century Gelasian Sacramentary and the Roman Martyrology, was beheaded on the Via Aurelia about the year 304 during the persecution of Diocletian. He is said to have been a youth of about fourteen, of Phrygian birth, who came to Rome with his uncle and was baptized there.Pope Symmachus (498-514) built a basilica over his tomb on the Via Aurelia. Sources: https://www.usccb.org/resources/2026cal.pdf.
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