Kubrat, Prince of Panagyurishte Bulgarian royal and Spanish surgeon (b. 1965) Parents Queen Margarita of Bulgaria Simeon II of Bulgaria Children Mirko of Bulgaria, Prince of Bulgaria Tirso of Bulgaria Lukás of Bulgaria, Prince of Bulgaria Siblings Konstantin-Assen, Prince of Vidin Princess Kalina of Bulgaria Kyril, Prince of Preslav Kardam, Prince of Tarnovo Partners Carla Royo-Villanova y Urrestarazu