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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.

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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

MGC is now open to all members and visitors, with limited hours, on Thursdays from 4pm to 8pm and Saturdays from 10am to 4pm (CST).
Join us for CGSI's first quarterly program of 2021, and learn about three giants of Czech and Slovak architecture around the world.
MGC is now reopened to all members and visitors, with limited hours, on Thursdays from 4pm to 8pm and Saturdays from 10am to 4pm (CST).
Feb
27

RootsTech Connect 2021 (Online Virtual Conference)

RootsTech Connect will be live online during 25-27 February 2021 at rootstech.org. All of the content will be available following the live event for at least 12 months.
Feb
28

Global Slovakia Presents "Claim Your Heritage: Slovak Citizenship for Slovak Descendants!?" (Webinar)

Learn about the new Slovak Citizenship Act from a migration scholar and a citizenship law specialist in this cutting edge webinar.
Feb
28

Genealogy ConferenceKeeper.org (online event calendar)

Genealogy ConferenceKeeper.org is the most complete, entirely free, online calendar of genealogy conferences & events. Check it out often for events of genealogical interest.
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