Original: Joseph Haydn (1732 - 1809) had two Kapellmeister positions: first, from (probably) 1757 to 1761 for Count Morzin, then from 1761 on for the Eszterházy family, a high-ranking noble family of the Austrian Empire.
Simplified: Joseph Haydn worked for many years as Kapellmeister for the Eszterházy family, a very important noble family of the Austrian Empire.