Yi Hwang
While Hungu faction declined over the years without ideological successor to replace it, the Sarim faction maintained its identity through "martydom" of the earlier generation and came to dominate the court politics during the reign Seonjo. By then, Sarim philosophy coalesced around the teachings of the philosophers Yi Hwang and Yi I. Since then, the Sarim faction maintained political power for much of the Joseon dynasty.