Columbia subject headings:
Biographies.
Catholic Church--Korea--History.
Christian martyrs--Korea--Biography.
Chŏng, Yag-yong, 1762-1836--Family.
Persecution--Korea--History--18th century.
Yi, Sŭng-hun, 1756-1801--Correspondence.
Harvard subject headings:
Catholic Church--Korea--Clergy--Biography.
Catholic Church--Korea--History--18th century.
Chŏng, Yag-yong, 1762-1836--Family.
Yi, Sŭng-hun, 1756-1801.
Princeton subject headings:
Catholic Church--Korea--Clergy--Biography.
Catholic Church--Korea--History--18th century.
Chŏng, Yag-yong, 1762-1836--Family.
Yi, Sŭng-hun, 1756-1801.