Bouillon, Henri de La Tour d'Auvergne, vicomte de Turenne, duc de, 1555-1623, marshal of France, diplomat, and Protestant leader. He served with Henry IV against the Catholic League but fled (1603) to Geneva when he was ordered arrested for his part in a conspiracy against the king. Under Marie de' Medici he returned and entered the council of regency, from which he withdrew after a quarrel with the queen. He participated in a series of pro-Calvinist intrigues but later retired to his independent duchy, which he had acquired through marriage in 1591. He founded a library and a Protestant college at Sedan. Bouillon was the grandson of Anne de Montmorency and the father of Turenne.