CACrown ArchivesThe cinema collection
Menu
Research dossier · People & Ideas

Jackson Martínez

Colombian footballer (born 1986)

Correspondence, annotated notebooks and portrait silhouettes prepared for research
People and ideasInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionSep 12, 2026
Entity authorityQ356142 ↗
Source-derived summary

Jackson Arley Martínez Valencia (locally [ˈɟʝaksom maɾˈtines]; born 3 October 1986) is a Colombian former professional footballer who played as a striker.

He started his career with Independiente Medellín in 2004, becoming the league's top scorer in 2009, before signing for Chiapas in January 2010. He spent three years with the Mexican side before moving to Portugal to play for Porto, where he was the Primeira Liga's top scorer in all three of his seasons with the club. In July 2015, Martínez joined Atlético Madrid for €35 million, and six months later joined Guangzhou Evergrande of China for €42 million. He suffered an ankle injury in late 2016 that ruled him out for two years, before ending his career back in Portugal with Portimonense in 2020.

Martínez represented Colombia 40 times between 2009 and 2015, scoring nine goals. He played for the national team at the Copa América in 2011 and 2015, as well as the 2014 FIFA World Cup, where he scored two goals against Japan.

Club career

Independiente Medellín

Born in Quibdó in the Chocó Department, Martínez joined Independiente Medellín's youth academy in 2001 until being called up to the first team for the 2004 Finalización. He made his debut on 3 October 2004, his 18th birthday, in a 2–2 draw against Junior. His first professional goal came roughly a month later in a 1–1 draw against Deportivo Pereira on 11 November.

Editorial summary

This brief starts where responsible research should: with the source description of “Jackson Martínez” as colombian footballer (born 1986). Everything that follows is an evidence route, not borrowed authority.

Editorial reviewA productive starting point for separating a subject’s documented career from later reputation and commemoration. The current lead gives the account dated anchors—1986, 2004, 2009, 2010—that can be checked directly. The selected authority fields contribute no independent date. The account is most persuasive where Jackson, Martínez and Colombian can be independently traced.
Editorial analysis

Why this record matters

The subject matters to the people & ideas register because the source frames it as colombian footballer (born 1986). Its deeper value depends on whether names, dates, institutions and citations support that framing.

Evidence profile

Biographical claims are most persuasive when dates, appointments and relationships can be traced to records created close to the events described. The source revision retrieved here is dated Sep 12, 2026. The linked authority identifier is Q356142. The first chronological checks are 1986, 2004, 2009 and 2010.

Critical limits

A concise life account rarely captures disputed attribution, private networks or the changing language used to describe a career. 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

Read biographical claims against dates, named institutions and the cited references. Distinguish a subject’s later reputation from evidence produced during their lifetime.

Best used for
  • Establishing names and roles
  • Building a first chronology
  • Locating cited institutions
Verify next

Personal papers, civil or court records, institutional files and the scholarship cited by the source.

Three-step research path

  1. Establish the record: confirm the title “Jackson Martínez”, its source revision and the description used here.
  2. Expand the search: follow Jackson Martínez primary sources, Jackson Martínez archive and Jackson 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 “Jackson Martínez”?
  2. Which claims depend on a single source or contested interpretation?
  3. Which primary records establish identity, chronology and institutional ties?
Subject index

Search terms from this dossier

Source & attribution

This entry incorporates text from “Jackson Martínez” 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.