is called Lord (Duke) Chumil Branch (1파 추밀공파(樞密公派)). The Second Branch descending from Ahn Yeong-rin is called Lord (Duke) ByeolJang Branch (2파 별장공파(別將公派)). The Third Branch descending from Ahn Yeong-hwa is called Lord (Duke) Kyoseo Branch (3파 교서공파(校書公派)). From these three branches, there are 14 more sub-branches from the First Branch, 4 more sub-branches from the Second Branch, and 4 more sub-branches from the Third Branch. The Sunheung-Ahn Clan became one of the most powerful and famous noble clans after Ahn Hyang, who is the grandson of Ahn Yeong-yu (the founder of the Lord (Duke) Chumil Branch and the great-grandson of Ahn Jami, the founder of the Sunheung-Ahn Clan. An Hyang passed the Gwageo(State examination) in 1260(Wonjong 1). And he served as Docheomuijungchan(Vice-premier). An Hyang is considered the founder of Neo-Confucianism in Korea, introducing Song Confucianism to the Goryeo Kingdom. An Hyang is generally numbered among the clan's most illustrious members, and founded a branch of his own within the Sunheung-Ahn Clan, called Lord (Duke) Moonsun Sub-Branch (문성공파(文成公派)). Subsequent to An Hyang and for the rest of the Goryeo Dyasty, the Sunheung-Ahn Clan had members passing the Gwageo(State Examination) for 11 generations; 20 members of the Sunheung-Ahn Clan were made into Dukes or Grand Dukes (봉군(封君)), and produced 17 Daejehaks(대제학), which were then the highest office academics could reach in the Royal Court, equivalent to today's Ministers of Education. Sunheung Clan in Joseon Dynasty After the fall of the Goryeo Dynasty and the establishment of the Joseon Dynasty in 1392, the Sunheung-Ahn Clan still remained one of the most powerful and famous noble clans, and was known for being one of the Six Greatest Clans in the kingdom. During the Joseon Dynasty, 641 members of the Sunheung-Ahn Clan passed the Gwageo(State Examination). However, the Sunheung-Ahn Clan lost its power in the mid 15th century due to its support of King Danjong, a young king who was overthrown and then later assassinated by his uncle in the midst of political turmoil. The Sunheung-Ahn Clan led the movement to restore King Danjong back to the throne, which is one of the most well-known tragedies in the history of the Joseon Dynasty. Once the movement failed, the Sunheung-Ahn clan lost its status as one of the most prestigious clans in the kingdom, and members of the clan left the ancestral home of Sunheung and scattered around the kingdom to run away from the