Pope Pius I
pope
Pius I (Italian: Pio I, Greek: Πίος) was the bishop of Rome from c. 140 to his death c. 154, according to the Annuario Pontificio. His dates are listed as 142 or 146 to 157 or 161, respectively. He is considered to have opposed both the Valentinians and Gnostics during his papacy. He is considered a saint by the Eastern Orthodox Church and the Catholic Church with a feast day on 11 July, but it is unclear if he died as a martyr.
Early life
Pius is believed to have been born at Aquileia, in Northern Italy, during the late 1st century. His father was an Italian called Rufinus, and according to the Liber Pontificalis was also a native of Aquileia. According to the 2nd-century Muratorian Canon and the Liberian Catalogue, Pius was the brother of Hermas, author of the text known as The Shepherd of Hermas. Its author identifies himself as a former slave, a fact which has led to speculation that both Hermas and Pius were freedmen. However Hermas' statement that he was a slave may just mean that he belonged to a low-ranking plebeian family.
Pontificate
According to Catholic tradition, Pius I governed the church in the middle of the 2nd century during the reigns of the Emperors Antoninus Pius and Marcus Aurelius.
“Pope Pius I” enters the record as pope. Crown Archives preserves that source wording while asking what Pope, Pius and pope can confirm, complicate or overturn.
Why this record matters
“Pope Pius I” is worth following because a concise public description often conceals a longer documentary argument. Here, Pope, Pius and pope provides the most credible route into that argument.
The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Aug 8, 2026. The linked authority identifier is Q83198. VIAF identifies the subject as 22946516. The Library of Congress control number is nb2007022949. 2 of 3 selected statements include explicit references; 1 carry qualifiers and 0 use preferred rank.
A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “Pope Pius I”, its source revision and the description used here.
- Expand the search: follow Pope Pius I primary sources, Pope Pius I archive and Pope research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Pope Pius I”?
- Which cited source is closest to the event, object or claim?
- Which institution is responsible for the underlying evidence?
Search terms from this dossier
This entry incorporates text from “Pope Pius I” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.