GRG International 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, a partial list of these Country Correspondents follows:

To jump to a particular country or area of interest, you can press on the respective link below:
Australia; Belgium; Brazil; Canada; China; Egypt & South Africa & Central Africa; Finland; France; Germany; Greece; India; Republic of Ireland & Northern Ireland; Italy; Jamaica; Japan; Mexico & Central America; Middle East; The Netherlands; Norway; Poland; Portugal; Puerto Rico; Russia; South America (Other); South Korea; Spain; Sweden; Switzerland & Austria; United Kingdom; United States;

1. USA:
Mr. Robert D. Young, Atlanta, Georgia, USA; Director, GRG Supercentenarian Research and Database Division (This involves managing the other admins, attend conferences representing the GRG, preparing scientific tables and publications, managing all applications, putting them in order, filing the data, and moving cases forward). In addition, he is the GRG Senior Claims Investigator; Moderator for the World's Oldest People Group [See Ref. 1 below for the WOP Charter]; and Senior Gerontology Consultant for the Guinness Book of World Records; E-mail:; Voice: (404) 807-0029.
Mr. Louis Epstein, Putnam County, New York, USA; E-mail:
Mr. E. A. Kral, Wilbur, Nebraska, USA, covering the state of Nebraska; Voice: 402-821-3060
Prof. John R. Wilmoth, Ph.D., Demographer of the Center for the Economics and Demography of Aging at UC Berkeley (2232 Piedmont Avenue; Berkeley, CA 94720-2120; Voice: 510-642-9688; E-mail:; URL:
Mr. Donald B. Gennery, GRG Biostatistician, NASA/JPL; Pasadena, California, USA; E-mail:
Mr. Mark E. Muir, Phoenix, Arizona, USA, Senior Administrator for GRG Website Support (This involves preparing and delivering data sets for analysis, maintaining GRG Tables on website and evaluating data in the database); E-mail:
Mr. Ethan Unruh, Nebraska, USA, Junior Correspondent for USA; E-mail:

2. Canada:
Prof. Bertrand Desjardins

3. England, Scotland, Wales:
Dr. Andrew Holmes, Ph.D., GRG Administrator for Graphics (This involves designing and developing graphics for the GRG website)
Mr. Chris Law, Senior Administrator for GRG Website Technology and GRG Photo Archive Administrator (This involves managing and developing the GRG photo galleries, producing other website content updates or corrections and providing database support for Mr. Mark Muir);
Sadly, the late Ms. Melissa Page, our United Kingdom Correspondent for many years, died in May 2015 at age 30.

4. Ireland (Republic of Ireland, Northern Ireland):
Mr. Finbarr Connolly

5. France:
Mon. Laurent Toussaint
Dr. Luc Le Lay, Ph.D., MBA
Prof. Jean Marie Robine
Mon. Martin Miet
Mon. Cyril Depoudent
Mon. Antoine Demarais

6. Spain:
Sr. Miguel Quesada
Sr. Emilio Ibañez

7. Italy:
Giovanni Alunni, Senior Correspondent
Paolo Scarabaggio, Correspondent
Alessandro Delucchi, Correspondent

8. Switzerland & Austria:
Mr. Thomas Breining

9. Germany:
Thomas Breining
Stefan Jamin (and Eastern Europe)(

10. Poland:
Karol Wejchert
Waclaw Jan Kroczek (; Voice: +48 600109523)

11. Russia:
Dmitry Sudakov
Dr. Leonid Gavrilov, Ph.D., University of Chicago

12. Greece:
Prof. Dimitrios Kardamakis, M.D., Ph.D., DMRT
Department of Radiation Oncology
University of Patras Medical School
26504 GREECE
Elias Leivaditis (

13. The Netherlands:
Mr. Marco Wikkerink, Administrator for GRG Case Applications (Coordinates and tracks potential and pending cases for Mr. Robert Young's review, maintains list of "last confirmed alive" dates for living supercentenarians);
Mr. Gert Jan Kuiper

14. Belgium:
Prof. Michel Poulain, Université Catholique de Louvain, BELGIUM and
Mr. Peter Vermaelen
Mr. Anthony Croes-Lacroix

15. Finland:
Mr. Anti Hervonen

16. Sweden:
Mr. Foti Tillo
17. Norway:
Currently vacant
Sadly, the late Mr.Celvin Ruisdael, our Norway Correspondent for many years, died in May 2012 at age 47.

18. Japan:
Hamish Todd, British Museum, London, UK
Ken Matsuoka
Stefan Gelow
Dr. D. Craig Wilcox, Okinawa Centenarian Study
Tom Li

19. South Korea
Jong Bhak, Ph.D., Director
Personal Genomics Institute and Theragen Bio Institute

20. China:
Mr. Danan Gu, Ph.D.

21. India:
Mr. Udaya Revathi Udayashankar
Dr. Raj Kumar
Ravi Chawla

22. Australia:
Prof. John McCormack, Senior Lecturer
Health Sciences
La Trobe University
Bundoora Victoria 3083
Mobile: 0407 351 356 or +61 3 9479 5734
FAX: 03 479 5257

23. Puerto Rico
Jennie "Jayne" Jimenez

24. Brazil:
Ricardo Pereira Lago
Mr. Stanley R. Primmer
Prof. Cassio M. Turra
Departamento de Demografia/Cedeplar
Universidade Federal de Minas Gerais
Av. Antonio Carlos 6627, sala 3055
31270-901 - Belo Horizonte -MG- Brasil
Mr. Gabe Ainsworth
Mr. Tiago Jose Silva

25. Other South America:
Argentina: Nicolas Ruiz Moreno; Cell phone: (03436) 15412829

26. Jamaica:
Mr. Maurice Harrison

27. Mexico & Central America:
Currently vacant

28. Portugal:
Mr. Filipe Prista Lucas

29. Egypt, South Africa, and Central Africa:
Currently vacant

30. Middle East:
Currently vacant

If you would like to apply for the position of Country Correspondent for your own country and you feel comfortable translating source documents from your native language into English and are on the computer on a frequent basis, read the Birthday/Obituary Section of your local newspapers, please contact John M. "Johnny" Adams at JAdams - at sign - grg dot org or call (949) 922-9786.

Note that you may need to contact government officials in your home country from time to time and must be willing to sign our Standard GRG Policy agreeing to safeguard original documents and contact information about subjects, their next of kin, and family members in a confidential manner.

Ref 1.

September 13, 2009; The Charter for the World's Oldest People Group is as follows:

1. Collect and post demographic data about persons aged 108 and older;

2. Assist in the validation of such data, worldwide, based on three independent source documents needed to prove the claim. This may include accurate translation of documents by our correspondents from the original source language into English. We will also help to perform statistical analysis of the data for publication in scientific/medical journals, according to various demographic criteria.

3. Collect photographs of such persons for posting on the Internet.

As such, the goal of the WOP Group is to obtain a historical list of the entire set of persons aged 110 and older who are validated. (We begin our validation process at age 108 for "candidates").