Duchy of Saxe-Coburg and Gotha
Other members of the family became kings of Belgium and Bulgaria, and married into nearly all of the other royal families of Europe. More than 50 years after Bulgaria became a republic, King Simeon returned to Bulgaria and was elected Prime Minister. After the First World War the Kings of Belgium stopped using the name Saxe-Coburg and Gotha, but never officially changed their name. Simeon of Bulgaria's legal name is Simeon Borisov Sakskoburggotski