Check the publications listed above for a description of the origin and content of the database.
Users can query one field or multiple fields; the javascript and
php function are set up in a way to easily accept more fields
Queried results will appear in the results table and on the map. Some
good last names to try is "Weigl" and "Abonyi". Only the first 100
results are queried but hopefully that should be enough to find
what you are looking for.
The markers that appear do have popups which will appear when clicked