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Vítáme Vás! (We welcome you!)

Research and connect with families from the Czech and Slovak ancestral lands.

CGSI focuses on the areas of present-day Czech Republic and Slovakia. This includes Czech (Bohemian), German-Bohemian (Böhmisch), Hungarian, Jewish, Moravian, Rusyn (Ruthenian), Silesian, and Slovak ancestry.

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Czechoslovak Genealogical Society International (CGSI) is a member-based organization.

We are dedicated to genealogical research and interest in descendants of ethnic groups with roots from the Czech and Slovak ancestral lands of Central Europe.

CGSI conference attendees at a table
Sections

What Members Say

Litomyšl
Because of CGSI, in six months I went from knowing nothing about my Czech ancestors to learning I had relatives who were serfs on the Litomyšl estate.
JoAnn P., Cadott, Wisconsin, USA

News & Events

CGSI Bylaw Amendment proposed for Annual Membership Meeting on October 24, 2020.
Slate of Candidates for Office 2021-2023 announced for Annual Membership Meeting election on October 24, 2020.
The CGSI Research Collection is now open for visitors on Thursdays from 4 pm to 8 pm and Saturdays from 10 am to 4 pm (CDT).
Oct
24

CGSI 2020 Virtual Symposium: Czech and Slovak Fraternal Organizations (Online Event)

CGSI 2020 Symposium: Czech and Slovak Fraternal Organizations (Online Event)
Oct
24

CGSI 2020 Annual Membership Meeting (Online Event)

CGSI 2020 Annual Membership Meeting & Election of Officers (Online Event)
Oct
26

Slovak Embassy & University of Ottawa Present "Milan Rastislav Štefánik" Lecture (Webinar)

The Embassy of the Slovak Republic in Ottawa and the Chair in Slovak History and Culture at the University of Ottawa invite you to participate in a webinar about Milan Rastislav Štefánik, Co-Founder of Czechoslovakia and Slovak National…
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Charles Bridge in Prague