Juan de Mariana was a Spanish historian and Jesuit priest born in 1536. He is best known for his work "Historiae de España," which provides a detailed account of Spanish history from its origins to the late 16th century. Mariana's writings are notable for their critical approach to historical events and figures, emphasizing moral lessons. In addition to his historical contributions, Mariana was also involved in political thought. He argued for the rights of the people against tyrannical rulers, which influenced later political theories. His ideas contributed to discussions on governance and the role of the monarchy in Spain.