Jean de Poitiers, Lord of Saint Vallier (c. 1475 – 1529) was a French nobleman best known as the father of Diane de Poitiers, mistress of King Henry II of France.
[2] His maternal grandparents were Bertrand VI, Count of Auvergne and Louise de La Trémoille.
[2] His maternal aunt, Anne de la Tour d'Auvergne, was the second wife of Alexander Stewart, Duke of Albany (the Scottish prince and second surviving son of King James II of Scotland) and his uncle, John IV, Count of Auvergne, was the maternal grandfather of Queen Catherine de' Medici (wife of King Henry II of France).
His story was the inspiration for a character in Victor Hugo's 1832 play Le roi s'amuse who became Count Monterone when Francesco Maria Piave and Giuseppe Verdi relocated the plot of their 1851 opera Rigoletto from France to the Duchy of Mantua.
Together, they lived at the Château de Saint-Vallier in Drôme and were the parents of:[4] Poitiers died in 1529.