The House of Wettin was a dynasty of German counts , dukes , prince-electors ( KurfÃ 1\/4 rsten ) and kings that ruled in what is known today as the German states of Saxony and Thuringia for more than 800 years . The House of Wettin is a dynasty of German counts , dukes , prince-electors ( KurfÃ 1\/4 rsten ) and kings that once ruled the area of today 's German states of Saxony , the Saxon part of Saxony-Anhalt , and Thuringia for more than 800 years .