Picture: Gianni Careddu · CC BY-SA 4.0 · Wikimedia Commons

Saturninus of Cagliari

Christian martyr

SaintPre-congregation

Feast: 30 October (not on the universal Roman calendar; kept in the Roman Martyrology or local calendars)

Born

285

Died

304

Beatified

—

not needed: before formal processes

Canonised

By tradition

recognised before formal processes began

Who they were

Saint Saturninus of Cagliari (Italian: San Saturnino, Saturno) is venerated as the patron saint of Cagliari. According to Christian tradition, Saturninus was a local martyr –that is, he was killed at Cagliari by order of governor Barbarus. The legend states that he was beheaded for refusing to offer sacrifices to Jupiter during the persecutions of Christians by Diocletian.

Summary from Wikipedia (CC BY-SA 4.0), until this page is written up in full.

The miracles

Limited information is available on this saint so far.

Why that counted as sanctity

Limited information is available on this saint so far.

Sources

Santi, beati e testimoni - SanSaturnino di Cagliari — Santiebeati.it, the Italian Catholic saints dictionary, carries a full entry: SanSaturnino di Cagliari - sec. III.
Wikidata Q1747656 — dates, feast day and identifiers (CC0)
English Wikipedia — Saturninus of Cagliari (CC BY-SA)

Not yet written up in full. The Catholic source above names this person; the name, dates and step come from Wikidata and are not yet checked against Church records.