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Why was Henri de Talleyrand, comte de Chalais, executed in 1626?

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Full-length portrait of Cardinal Richelieu by Philippe de Champaigne, showing him in red clerical robes holding a red book, standing beside a balustrade with a draped curtain behind. — Cardinal Richelieu As both statesman and churchman, Cardinal Richelieu was the acknowledged architect of France's greatness in the 17th century. In 1640, when this full-length portrait was painted (likely by Philippe de Champaigne), he was embroiled in a dispute with the pope and other religious controversies along with many other consequences of expanding French power across Europe. He would die two years later, facing conspiracies against his life and suffering ill health.

Henri de Talleyrand, comte de Chalais, was executed in 1626 because he was a conspirator in a revolt against the French crown that involved the king’s younger brother and heir, Gaston, duc d’Orléans.12

This uprising was one of several revolts by nobles that Cardinal Richelieu sought to crush as part of his broader objective to secure absolute obedience to the monarchy and strengthen royal authority. King Louis XIII responded to the conspiracy with ruthlessness, leading to the execution of Chalais as an example to those challenging the centralization of royal power.12