Maria Elisabeth Hesselblad helped hide Jewish families in her convent during the German occupation of Rome.
CHR Comment: Hesselblad was baptized as a Lutheran in Sweden, converted to Catholicism in New York, helped to found the Bridgettine Order in Rome, and hid at least a dozen Jews in her convent during the Holocaust. She was truly an interesting person, the first Swedish saint in over 600 years.
Source: Pope Declares Swedish Nun Who Sheltered Jews During The Holocaust A Saint