Prince Bertil, Duke of Halland Swedish prince (1912-1997); son of Gustaf VI Adolf and Princess Margaret of Connaught (1912–1997) Parents Princess Margaret of Connaught Gustaf VI Adolf of Sweden Children Siblings Prince Gustaf Adolf, Duke of Västerbotten Prince Sigvard Bernadotte Ingrid of Sweden Prince Carl Johan Bernadotte unnamed daughter Bernadotte Partners Princess Lilian, Duchess of Halland