The first native Korean priest was the son of Korean converts. His father, Ignatius Kim, was martyred during the persecution of 1839 and was beatified in 1925. After Baptism at the age of 15, Andrew traveled 1,300 miles to the seminary in Macao, China. After six years he managed to return to his country through Manchuria. That same year he crossed the Yellow Sea to Shanghai and was ordained a priest. Home again, he was assigned to arrange for more missionaries to enter by a water route that would elude the border patrol. He was arrested, tortured and finally beheaded at the Han River near Seoul, the capital.
Paul Chong Hasang was a seminarian, aged 45. 103 martyrs are revered as the Martyrs of Korea.
Christianity came to Korea during the Japanese invasion in 1592 when some Koreans were baptized, probably by Christian Japanese soldiers. Evangelization was difficult because Korea refused all contact with the outside world except for bringing taxes to Beijing annually. On one of these occasions, around 1777, Christian literature obtained from Jesuits in China led educated Korean Christians to study. A home Church began. When a Chinese priest managed to enter secretly a dozen years later, he found 4,000 Catholics, none of whom had ever seen a priest. Seven years later there were 10,000 Catholics. Religious freedom came in 1883.