I decided to start with my 4th great grandmother, Kathařina Folta.
Folta is a fairly common surname in the Czech Republic today, as you can tell from the Czech surname density map at kdejsme.cz. The most dense population of Folta's is found in okres (district) Valašské Meziříčí. This town is currently located in the kraj (region) Zlín.
Here is a zoomed version:
Here is how I am related to the Folta family:
Katherine Elizabeth Vasicek
Mark Edward Vasicek
Victor Frederick Vasicek
Elizabeth Agnes Michna
Are you a Folta? Are you Czech? Where are you or your Czech ancestors from?