Pedro III of Portugal was born on July 5, 1717, and became king in 1777 after the death of his wife, Queen Maria I. His reign was marked by a focus on the welfare of the Portuguese people and the promotion of economic reforms. Despite his efforts, Pedro III faced challenges, including political instability and the effects of the Lisbon earthquake of 1755. He ruled until his death on May 25, 1786, leaving behind a legacy of compassion and dedication to his country.