Simeon II of Bulgaria Bulgarian politician and royal (born 1937) (b. 1937) Parents Giovanna of Savoy Boris III of Bulgaria Children Kubrat, Prince of Panagyurishte Kardam, Prince of Tarnovo Konstantin-Assen, Prince of Vidin Princess Kalina of Bulgaria Kyril, Prince of Preslav Siblings Princess Maria Luisa, 9th Princess of Koháry Partners Queen Margarita of Bulgaria
