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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).
Apr
09

FamilyTreeWebinars & MyHeritage present "The 2nd Annual 24-Hour Genealogy Webinar Marathon" (Webinar)

Join us in making history as we embark on this second-annual webinar marathon event absolutely free!
Apr
10

WSGS 2021 Gene-A-Rama Conference (Online event)

Investigating Your Roots - Becoming a Genealogy Super Sleuth! featuring the The Genealogy Guys - George G. Morgan & Drew Smith
Apr
11

Global Slovakia Presents "Gipsy Flame" (Webinar)

Explore the past and the present of the Roma ethnic minority in Slovakia, with special guest Ivett Pavlis and Team Global Slovakia.
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