Duchess Helene of Württemberg (1929-2021) (1929–2021) Parents Philipp Albrecht, Duke of Württemberg Duchess Rosa, Duchess of Württemberg Children Gian-Carlo Pallavicini Gabriela Pallavicini Antoinetta Pallavicini Maria Cristina Pallavicini Siblings Duchess Maria Christina of Württemberg Duke Ludwig Albrecht of Württemberg Duke Carl, Duke of Württemberg Duchess Marie Thérèse of Württemberg Duchess Elisabeth of Württemberg Duchess Maria Antonia of Württemberg Partners Frederico Pallavicini, Marchese Pallavicini