A Study on the Author and Writing Year of the Marjinpyeon

마진편(麻疹篇) 저자와 저술 시기에 대한 고찰

A thesis insisting that Sugjong's medical doctor Yoo Itae(劉以泰) and the author of Marjinpyeon Yoo Itae(劉爾泰) are not a same person and his activities were in Heonjong(헌종) period, and his writing Marjinpyeon is in 1846, is published. In this study, I'd like to reveal that Yoo Itae(劉爾泰), the Marjinpyeon's author and Yoo Itae(劉以泰), Sugjong's medical doctor are a same person through analysis of Geochang Yoo's genealogy, articles, The True Record of the Joseon Dynasty, Seungjeonilgi, Taeweonseonsaengan, Sancheong-gun's paper, Sancheong Hyanggyo's paper, Sancheong-gun's paper, The geographic paper, Dongyuhagan, Sawoo Munjib, and analysis of folk story, the wrote year of his Marjinpyeon and Inseomunkyunrok and his birth year. According to my analysis, Yoo Itae(劉爾泰), the Marjinpyeon's author and Yoo Itae(劉以泰), Sugjong's medical doctor are a same person. And Marjinpyeon is written in 1696, the year of Byongja, and other his books, InseoMungyonlok at 1709, the year of Gichug. In conclusion, Yoo Itae(劉以泰.劉爾泰) was a famous medical doctor at Sancheong, born in 1652 (HyoJong the $3^{rd}$ year) and passed in 1715 (SugJong the 41th year), left books of Marjinpyeon, Silheomdanbang, and Inseomunkyunrok.