Mother Catherine Mercovich (17 March 1899-12 May 1977) was already a prominent figure in the Catholic Church when she embarked on the mission to Nagasaki. She was the superior of the first group of Good Samaritan Sisters to visit Japan at the end of the Second World War, setting sail on the SS Shangte on October 15, 1948, from Sydney, embarking on a prolonged 33-day voyage before arriving in war-torn Japan.