About us

Klaas Zondervan

Klaas Zondervan was born in 1981 in Leeuwarden. He is a Member of the Board of the Dutch Association of Legal Advisors (NVRA), Registered Open Source Intelligence (OSINT) Analyst® and maintains a private investigative license allotted to him by the Ministry of Security and Justice (POB 1403). Apart from that he is a sworn translator English. Since 2003 he has been involved in genealogy, focusing on his own family history at first, but soon moving on to probate genealogy.

Since the founding of TracersInternational.com in October of 2013 he has successfully applied himself to attain a respectable reputation within the notarial and legal profession, fields of expertise that are closely related to inheritance laws. At the same time he established an extensive international network of researchers, enabling him to conduct research in virtually every country. Whether you (merely) need to obtain notarial deeds or certificates or require a full probate investigation to be carried out, he is not only willing but very capable to be of assistance to you.

Klaas Zondervan REP
Maryssa Mann

Maryssa G.A. Mann M.Sc. M.A.

Maryssa Mann was born in the United Kingdom and has been working with TracersInternational.com since 2019. She studied Farmaceutical Chemistry at Rhodes University in Grahamstown, South Africa, studied English at Sheffield Hallam University in Sheffield, United Kingdom, passed the exam to become a Dutch private investigator in 2016 and has been involved in probate genealogy ever since.

Because of her scientific and liguistic background she is able to swiftly understand legal and genealogical connections, efficiently conduct research and maintain a good relationship with our correspondents in the various foreign countries that are within our scope of service. Apart from her activities with TracersInternational.com, she also provides English lessons to professionals.



2423 SW 147th Ave #4001

Miami, FL 33185

United States of America

131 Keylana Drive #4002

Keysborough, VIC 3173


Office 37960, P.O. Box 6945

London W1A 6US

United Kingdom

Klaas Zondervan

Glad to meet your acquaintance

Background information about the owner of Erfgenamenonderzoek.nl. Who is Klaas Zondervan and what drives him? Would you like to meet in person? This is of course always possible!

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Just to get acquainted or to schedule a presentation about probate genealogy, no strings attached.