Simeon Saxe-Coburg-Gotha
In 1826, a cadet branch of the house inherited the Hungarian princely estate of the Koháry family and converted to Roman Catholicism. Its members managed to marry a queen regnant of Portugal, an imperial princess of Brazil, an archduchess of Austria, a French royal princess, a royal princess of Belgium and a royal princess of Saxony. A scion of this branch, Ferdinand, became ruling Prince and then Tsar of Bulgaria, and his descendants continued to reign there until 1946. The current head of the House of Bulgaria, the former Tsar Simeon Saxe-Coburg-Gotha, who was deposed and exiled after World War II, goes by the name of Simeon Sakskoburggotski and served as Bulgaria's prime minister from 2001 to 2005.