Son of Yak Jong Church who was martyred in 1801 in the persecution of Shin-Yu, an attack on the faith that killed all the clergy in the country. Son of Saint Yu Cecilia; brother of Saint Jung Hye. Paul, though a layman, reunited the scattered Christians, and encouraged them to keep their faith and live their faith. He wrote the which explained to the Korean government why the Church was no threat to them. He crossed into China nine times, working as a servant to the Korean diplomatic corps. There he worked to get the bishop of Beijing to send more priests to Korea. He pleaded directly to Rome for help, and on 9 September 1831, Pope Gregory X proclaimed the validity of the Korean Catholic diocese. When the clergy began to return, Paul entered the seminary. However, he died in the Gi Hye persecution of 1839 before he could be ordained. One of the great founders of the Catholic Church in Korea.