Andrew Kim Taegon
Saint Kim Taegon Andrea , generally referred to as Saint Andrew Kim Taegon in English, was the first Koreanborn Catholic priest and is the patron saint of Korea. In the late 18th century, Roman Catholicism began to take root slowly in Korea and was introduced by laypeople. In 1836 Korea saw its first consecrated missionaries arrive, only to find out that the people there were already practicing Korean Catholics.
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Source: Wikipedia