The concept of the "King of Portugal" includes both historical figures and literary portrayals, illustrating the country's political development and cultural storytelling. Writers such as Anna Maria Porter and Pierre Marie Louis de Boisgelin de Kerdu delved into the monarch's personality, rule, and enduring influence, focusing on themes of governance, devotion, and the relationship between royal power and national identity.
While Henry Hallam emphasized Portugal's prosperity under a virtuous leader, others, such as the anonymous authors of The Historians’ History of the World, analyzed the conflicts between monarchy and evolving societal values. These diverse viewpoints together highlight the king's symbolic and practical significance in shaping Portugal's historical course.