According to Official Guinness Records,
Gaststätte Röhrl, located in Eilsbrunn, Germany, has been owned and run uninterruptedly by the Röhrl family since 1658, shortly after the Thirty Years War, when Andreas Röhrl married Susanna Hofmeister, daughter of the former innkeeper Georg Hofmeister. The Gaststätte, now a listed building by the Bavarian Regional Office for the Preservation of Historical Monuments, is currently run by Mr Muk Röhrl, the 11th generation of the Röhrl family.
For a complete list of 2011 records, please visit 2011 Guinness Records in Germany.