Iñigo López de Mendoza, also known as the Marquis of Santillana, was a prominent Spanish poet and nobleman born in 1398. He is recognized for his contributions to Spanish literature during the 15th century, particularly for his use of the Italian sonnet form. His works often reflect themes of love, nature, and chivalry. In addition to his literary achievements, Iñigo was a significant political figure, serving as a military leader and advisor. He was a member of the Mendoza family, one of the most influential noble families in Spain. His legacy continues to influence Spanish poetry and culture.