Ludovicus Sasada was a Japanese Franciscan priest born in Edo around 1598. Following the execution of his father, he traveled to Mexico to join the Order of Friars Minor, where he began his religious studies. After receiving a special dispensation to be ordained in Manila, he returned to Japan alongside his mentor, Luis Sotelo. His mission ended in martyrdom in 1624 when he was executed by the authorities in Ōmura, becoming one of many Japanese Christians persecuted during the Tokugawa shogunate.