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Sonya Caleffi

Italian serial killer

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionJan 18, 2026
Entity authorityQ3964926
Source-derived summary

Sonya Caleffi (born 21 July 1970) is an Italian serial killer. She was suspected of killing 15 to 18 people and convicted of five of them.

Biography

At fifteen, Caleffi began to suffer from depression and anorexia nervosa, but at school, she remained a very quiet girl, with good performance in school.

Between 1990 and 1993, she attended courses to become a professional nurse at the Valduce Hospital of Como. In 1993, she married a carpenter from Cernobbio after being engaged for six months. Continuous quarrels between them lead her to divorce after just a year. She later met a radiologist and went to live with him in Tavernerio, where she finished her job in a state of reclusion at home.

From 1993 to 2000, Caleffi worked at the Valduce Hospital of Como in the departments of surgery general, endoscopy and first aid. From 2000 to 2001 she worked in first aid at Ospedale Sant'Anna of Como. In October 2001, she returned for a month to Valduce Hospital of Como.

Editorial summary

Begin with the source’s own compact description: “Sonya Caleffi” is italian serial killer. The dossier treats that line as a proposition to test through Sonya, Caleffi and Italian, not as a finished interpretation.

Editorial reviewA dependable orientation record for establishing vocabulary, names and a first evidence trail. The current lead gives the account dated anchors—1970, 1990, 1993, 2000—that can be checked directly. The linked authority record independently contributes the date 1970-07-21. For this dossier, Sonya, Caleffi and Italian is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “italian serial killer” 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

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 Jan 18, 2026. The linked authority identifier is Q3964926. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1970, 1990, 1993 and 2000.

Critical limits

Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. 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.

Best used for
  • Subject orientation
  • Search vocabulary
  • Locating named sources
Verify next

The closest primary source, responsible institution and strongest cited specialist reference.

Three-step research path

  1. Establish the record: confirm the title “Sonya Caleffi”, its source revision and the description used here.
  2. Expand the search: follow Sonya Caleffi primary sources, Sonya Caleffi archive and Sonya 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

  1. Which source most directly establishes the central claim about “Sonya Caleffi”?
  2. Which institution is responsible for the underlying evidence?
  3. Which cited source is closest to the event, object or claim?
Subject index

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Source & attribution

This entry incorporates text from Sonya Caleffi” 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.