The Duarte Dynasty refers to a royal lineage in the history of Portugal, specifically associated with the reign of King Duarte I. He ruled from 1433 to 1438 and was known for his efforts to strengthen the monarchy and promote the arts and culture during the early Renaissance period. His reign was marked by a focus on governance and the welfare of his subjects. Following King Duarte's death, the dynasty faced challenges, including political instability and conflicts over succession. The Duarte Dynasty is significant in Portuguese history as it laid the groundwork for future monarchs and influenced the development of the Portuguese state during a time of exploration and expansion.