Frederick Augustus I was a member of the House of Wettin who reigned as the last Elector of Saxony from 1763 to 1806 and as the first King of Saxony from 1806 to 1827. He was also Duke of Warsaw from 1807 to 1815, and a legitimate candidate to the Polish throne.

The House of Wettin was a dynasty of German kings, prince-electors, dukes, and counts that once ruled territories in the present-day German states of Saxony, Saxony-Anhalt and Thuringia. The dynasty is one of the oldest in Europe, and its origins can be traced back to the town of Wettin, Saxony-Anhalt. The Wettins gradually rose to power within the Holy Roman Empire. Members of the family became the rulers of several medieval states, starting with the Saxon Eastern March in 1030. Other states they gained were Meissen in 1089, Thuringia in 1263, and Saxony in 1423. These areas cover large parts of Central Germany as a cultural area of Germany.