Gaston IV was a French nobleman born in 1600, known for his role as the Duke of Orléans. He was a member of the House of Bourbon, a prominent royal family in France. Gaston was the son of Henri IV and Marie de' Medici, and he played a significant part in the political intrigues of his time, often opposing the central authority of the monarchy. Throughout his life, Gaston IV was involved in various military campaigns and political alliances. He was known for his ambition and desire for power, which sometimes put him at odds with his brother, Louis XIII. Gaston IV's legacy is marked by his attempts to assert his influence in the turbulent landscape of 17th-century France.