The House of Wettin was a dynasty of German counts, dukes, prince-electors (Kurfürsten) and kings that ruled in what is known today as the German states of Saxony and Thuringia for more than 800 years. Members of the Wettin family were also kings of Poland, as well as forming the ruling houses of Great Britain, Portugal, Bulgaria, Poland, Saxony, and Belgium. Today only the British and Belgian lines still rule their countries, but the last Tsar of Bulgaria, Simeon II, was Prime Minister of Bulgaria between 2001 and 2005. Simeon Saxe-Coburg-Gotha is the only ex-king who has ever returned to his country as an elected leader.