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Juan de Castro

Spanish cardinal

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionJul 9, 2026
Entity authorityQ476005
Source-derived summary

Juan de Castro (1431–1506) (called the Cardinal of Agrigento) was a Spanish Roman Catholic bishop and cardinal.

Biography

Juan de Castro was born in Valencia on March 22, 1431, the son of nobles Pedro Galcerán de Castre-Pinòs y Tramaced and Blanca de Só, viscountess of Évol.

He began his ecclesiastical career as a cleric in the see of Elne. He was later the Abbot of Fossanova Abbey. He was a familiar of Cardinal Roderic Llançol i de Borja, who later became Pope Alexander VI.

On February 19, 1479, he was elected Bishop of Agrigento. Pope Sixtus IV confirmed his election on March 20, 1479, and Castro subsequently occupied this see until his death. He attended the papal conclave of 1484 as a custodian. Following the papal conclave of 1492, the new pope, Alexander VI, made Castro prefect of the Castel Sant'Angelo.

Pope Alexander VI made him a cardinal priest in the consistory of February 19, 1496. He received the red hat and the titular church of Santa Prisca on February 24, 1496.

Editorial summary

Begin with the source’s own compact description: “Juan de Castro” is spanish cardinal. The dossier treats that line as a proposition to test through Juan, Castro and Spanish, not as a finished interpretation.

Editorial reviewA concise reference frame for defining the subject, testing terminology and identifying the institution closest to the evidence. The current lead gives the account dated anchors—1431, 1506, 1479, 1484—that can be checked directly. The linked authority record independently contributes the date 1431-03-22. For this dossier, Juan, Castro and Spanish is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “spanish cardinal” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.

Evidence profile

Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Jul 9, 2026. The linked authority identifier is Q476005. VIAF identifies the subject as 6362151717070413900007. 1 of 2 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1431, 1506, 1479 and 1484.

Critical limits

A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. 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.

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  1. Establish the record: confirm the title “Juan de Castro”, its source revision and the description used here.
  2. Expand the search: follow Juan de Castro primary sources, Juan de Castro archive and Juan research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

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Source & attribution

This entry incorporates text from Juan de Castro” 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.