with Beijing church. In 1795, Yun Yoo Il was arrested along with Ji Hwang (Sabas), Choi In Gil (Mathew). They were tortured to tell the location of Father Ju, but their strong endurance and wise response rather confused the persecutors. As a result, the three of them were beaten to death on June 28 of that year, when Yun Yoo Il was 35, Ji Hwang 28, and Choi In Gil 30. Jeong Yak Jong Augustinus (1760–1801): The first Catholic lay theologian in Korea. In 1760, he was born into a family of scholars in Majae (current Neungnae-ri Joan-myeon, Namyangju-si Gyeonggi-go). He is the father of Jeong Chul Sang(Charles ?-1801) who will be beatified together with the 123 Blessed and St. Jeong Ha Sang Paul (martyred in 1839), who was declared saint in 1984. After learning Catholic doctrine from his older brother Jeong Yak Jeon in 1786, he moved to Yanggeon Bunwon (current Bunwon-ri, Namjeong-myeon, Gwangju-gun, Gyeonggi-go) to live a life of faith and preached a doctrine to his neighbors while participating in church activities. After Father Ju Mun Mo came in 1794, Jeong Yak Jong often visited Han Yang to help church work. He also wrote two easy Hangul textbooks called 'Jugyo-yoji' a Catechism in the Korean language and distributed them to Christians with Father Ju's approval. Moreover, he became the first president of a layperson association called 'Myeongdo-hoe' which was organized by Father Ju. When persecution began in his hometown in 1800, Jeong Yak Jong and his family moved to Han Yang. However, Catholic Persecution of 1801 began in the following year and Jeong Yak Jong was arrested. As he tried to preach the righteousness of Catholic doctrine to persecutors, he was decapitated at Seosomun in 15 days after he was arrested. When he was martyred, he said "I'd rather die looking up at the sky than to die looking down at the ground" and was decapitated while looking up at the sky. That was 8 April 1801, when he was at age 41. Kang Wan Sook Columba (1761–1801): Female leader of Chosun Catholic. In 1761, she was born to a concubine of a noble family in Naepo area in ChungCheong-do. She learned about Catholic soon after she was married and practiced doctrine by reading Catholic books. During the persecution in 1791, she was imprisoned while taking care of the imprisoned faithful. Kang Wan Sook guided her mother-in-law and