approached her family and proposed a union between Polyxena and Victor Amadeus II's son and heir, Charles Emmanuel, Prince of Piedmont. A previous match orchestrated by Agostino Steffani with a daughter of Rinaldo d'Este, Duke of Modena, had come to nothing. His first wife, Countess Palatine Anne Christine of Sulzbach, died on 12 March 1723, less than a year after her marriage and barely a week after giving birth to a son, Victor Amadeus, Duke of Aosta. Although only two years younger, Polyxena was a niece of Charles Emanuel's first wife, and belonged to the only Roman Catholic branch of the reigning House of Hesse. In fact, she had been nominally a canoness of Thorn since 1720. The engagement was announced on 2 July 1724, and she wed Charles Emmanuel by proxy on 23 July in Rotenburg. The marriage was celebrated in person at Thonon in Chablais on 20 August 1724. Her stepson Victor Amadeus, heir after his father and grandfather to the Sardinian crown, died at the age of two, a year after Polyxena's marriage and before she had a child of her own. Nonetheless, she is said to have had a close relationship with her mother-in-law, Anne Marie d'Orléans, and the two frequented the Villa della Regina outside the capital, where the latter died in 1728. When King Victor Amadeus announced his decision to return to the throne after having abdicated in 1730, Polyxena used her influence over her husband to have his father imprisoned at the Castle of Moncalieri, where he was joined for a while by his morganatic wife, Anna Canalis di Cumiana, Polyxena's former lady of the bedchamber. In an 1869 history of the House of Savoy, Francesco Predari wrote that despite the fact Polyxena was praised for goodness of character and beautiful virtues, her father-in-law advised her to take care to maintain separate quarters from her husband for prudence's sake. In 1732 she founded a home for young mothers in Turin, redecorated the Villa della Regina, Stupinigi's hunting lodge, and the Church of Saint Joseph in Turin. She carried out various improvements with Filippo Juvarra and popularised chinoiserie. She was also a patron of Giovanni Battista Crosato, a baroque painter. Having been ill since June 1734, she died at the Royal Palace of Turin, and has been buried in the Royal Basilica of Superga since 1786. Two years after her death, her widower married Princess Elisabeth Therese of Lorraine, sister of the future Francis I, Holy Roman Emperor.
