Joseph Zhang Dapeng was a Chinese silk-maker and Catholic martyr who lived from 1754 to 1815. Born in Duyun, he was originally raised as a Buddhist before converting to Christianity later in life. After undergoing baptism at age 46, he dedicated himself to preaching the faith, teaching at a Catholic school, and assisting the poor and orphaned. His commitment to his religious beliefs eventually led to his arrest and execution by Qing dynasty officials during a period of intense anti-Christian persecution.