Sejong the Great (May 7, 1397 – May 18, 1450, r. 1418–1450) was the fourth king of the Joseon Dynasty of Korea. During his regency, he reinforced Korean Confucian policies and executed major legal amendments (공법; 貢法). He also used the creation of Hangul and the advancement of technology to expand his territory. He is the third son of King Taejong and Queen Consort Wonkyeong. Sejong is one of only two Korean rulers posthumously honored with the appellation "the Great", the other being Gwanggaeto the Great of Goguryeo.