Correspondents
Since 1998, the GRG has established a broad network of correspondents throughout the world. GRG Correspondents monitor, investigate, and attempt to validate supercentenarian claims in their respective region. Case applications are sent to the GRG Administration Team for review and potential case acceptance. In recognition of their work, please find a partial list of GRG Country Correspondents below:
If you would like to become a GRG representative on national level, a GRG Country Correspondent, and help us validate supercentenarian cases from YOUR native country and/or region, please contact the GRG Administration.
| Country | Name | Position | Image |
|---|---|---|---|
| Argentina | Mr. Nicholas Ruiz Moreno | GRG Correspondent for Argentina (since 2015) |  |
| Australia | Prof. John McCormack | GRG Correspondent for Australia (since 2004) |  |
| Austria | Mr. Thomas Breining | GRG Correspondent for Austria (since 2008) |  |
| Belgium | Prof. Michel Poulain, Ph.D. | GRG Correspondent for Belgium (since 2002) |  |
| Belgium | Mr. Peter Vermaelen | GRG Correspondent for Belgium (since 2008) |  |
| Brazil | Mr. Ricardo Pereira Lago | GRG Correspondent for Brazil (since 2015) |  |
| Brazil | Mr. Tiago José Soares Silva | GRG Correspondent for Brazil (since 2016) |  |
| Brazil | Mr. Gérson Dias | GRG Correspondent for Brazil (since 2020) | |
| Brazil | Dr. Ângelo José Gonçalves Bós | GRG Correspondent for Brazil (since 2023) |  |
| Brazil | Mr. Guilherme Matheus de Sousa Melo | GRG Correspondent for Brazil (since 2023) |  |
| Bulgaria | Mr. Lachezar Zanev | GRG Correspondent for Bulgaria (since 2020) |  |
| Canada | Prof. Bertrand Desjardins, Ph.D. | GRG Correspondent for Canada (since 2004) |  |
| Caribbean | Dr. Anthony Medford, Ph.D | GRG Correspondent for Barbados (since 2004) | |
| China | Dr. Danan Gu, Ph.D | GRG Correspondent for China (since 2016) | |
| Czech Republic | Mr. Adam Komenda | GRG Correspondent for the Czech Republic (since 2023) |  |
| Estonia | Mr. Gordei Korjak | GRG Correspondent for Estonia (since 2023) |  |
| Finland | Mr. Antti Hervonen | GRG Correspondent for Finland (since 2006) | |
| France | Mr. Sylvain Grosgeorge | GRG Correspondent for France (since 2023) |  |
| France | Mr. Pierre Jacob | GRG Correspondent for France (since 2024) |  |
| France | Dr. Jean-Marie Robine, PhD | GRG Correspondent for France (since 2002) |  |
| Germany | Mr. Thomas Breining | GRG Correspondent for Germany (since 2004) | |
| Germany | Mr. Stefan Jamin | GRG Correspondent for Germany (since 2008) |  |
| Greece | Mr. Ilias Leivaditis | GRG Correspondent for Greece (since 2015) |  |
| Greece | Prof. Dimitrios Kardamakis, M.D., Ph.D., DMRT | GRG Correspondent for Greece (since 2009) |  |
| Iceland | Dr. Ármann Jakobsson | GRG Correspondent for Iceland (since 2023) |  |
| India | Mr. Udaya Revathi Udayashankar | GRG Correspondent for India (since 2009) | |
| India | Dr. Raj Kumar, Ph.D. | GRG Correspondent for India (since 2009) | |
| India | Mr. Ravi Chawla | GRG Correspondent for India (since 2009) | |
| Italy | Mr. Alfredo Nocera | GRG Correspondent for Italy (since 2023) |  |
| Japan | Dr. D. Craig Willcox, Ph.D., MHSc, FGSA | GRG Correspondent for Japan (since 2002) |  |
| Japan | Mr. Ken Matsuoka | GRG Correspondent for Japan (since 2004) | |
| Japan | Mr. Hamish Todd | GRG Correspondent for Japan (since 2007) |  |
| Japan | Mr. Stefan Gelow | GRG Correspondent for Japan (since 2008) | |
| Japan | Mr. Tom Li | GRG Correspondent for Japan (since 2008) | |
| Latvia | Dr.iur. Kristīne Jarinovska, PhD | GRG Correspondent for Latvia (since 2025) |  |
| Netherlands | Mr. Gert Jan Kuiper | GRG Correspondent for the Netherlands (since 2002) |  |
| Netherlands | Mr. Jair van Dijk | GRG Correspondent for the Netherlands (since 2023) |  |
| Poland | Dr. Wacław Jan Kroczek, DMD | GRG Correspondent for Poland (since 2013) |  |
| Portugal | Mr. Filipe Prista Lucas | GRG Correspondent for Portugal (since 2008) |  |
| Puerto Rico | Ms. Jennie Jimenez | GRG Correspondent for Puerto Rico (since 2015) |  |
| Romania | Mr. Mihai Matei | GRG Correspondent for Romania (since 2024) |  |
| Romania | Ms. Lăcrămioara Frăsineanu | GRG Correspondent for Romania (since 2024) |  |
| Russia | Mr. Dmitry Sudakov | GRG Correspondent for Russia (since 2004) | |
| Russia | Dr. Leonid Gavrilov, Ph.D. | GRG Correspondent for Russia (since 2004) |  |
| San Marino | Mr. Alfredo Nocera | GRG Correspondent for San Marino (since 2023) | |
| Serbia | Mr. Dejan Vujić | GRG Correspondent for Serbia (since 2023) | |
| Slovenia | Mr. Silvo Torkar | GRG Correspondent for Slovenia (since 2010) |  |
| South Africa | Mrs. Heather MacAlister | GRG Correspondent for the Republic of South Africa (since 2023) |  |
| South Korea | Dr. Jong Bhak, Ph.D. | GRG Correspondent for South Korea (since 2009) |  |
| Spain | Dr. Francisco Villavicencio | GRG Correspondent for Spain (since 2024) |  |
| Spain | Sr. Miguel Quesada | GRG Correspondent for Spain (since 2004) |  |
| Spain | Mr. Emilio Ibáñez | GRG Correspondent for Spain (since 2004) | |
| Sweden | Mr. Victor Bjoerk | GRG Correspondent for Sweden (since 2016) |  |
| Switzerland | Mr. Flavio Stuber | GRG Correspondent for Switzerland (since 2016) | |
| Taiwan | Mr. Brian Hsu | GRG Correspondent for Taiwan (since 2024) |  |
| United Kingdom | Mr. Ben Sixsmith | GRG Correspondent for the United Kingdom (since 2024) |  |
| United States | Mr. Robert D. Young, MA, MA | GRG Correspondent for the USA (since 1999) |  |
| United States | Mr. Louis Epstein | GRG Correspondent for the USA | |
| United States | Prof. John R. Wilmoth, Ph.D. | GRG Correspondent for the USA |  |
| United States | Mr. Joey Brodsky | GRG Correspondent for the USA |  |
| United States | Mr. Donald B. Gennery | GRG Correspondent for the USA | |
| United States | Mr. Ethan Unruh | GRG Correspondent for the USA |  |
| United States | Mr. Mark Muir | GRG Correspondent for the USA |  |