My Ancestry Has Been Traced Back to an Individual Born 1780 and Appearing IN Church Records IN Neudorf Bei Vincovci from About 1830 the Family...

The family settled in Jugoslavia as part of a population program by the Austro-Hungarian empire. How do I trace his and his wife's ancestry back into Germany? They are German people who lived in Hungary and were known as Donauschwabians (Danube Swabians).

[admin: edited to make this more of a question]