Columbia subject headings:
Harvard subject headings:
Christian converts from Judaism--Italy--Bologna--Biography.
Jews--Conversion to Christianity--Italy--Bologna--History--19th century.
Jews--Italy--Bologna--Conversion to Christianity--History--19th century.
Mortara, Pio, 1851-1940.
Pius IX, Pope, 1792-1878.
Princeton subject headings:
Christian converts from Judaism--Italy--Bologna--Biography.
Jews--Italy--Bologna--History--19th century.
Mortara, Pio, 1851-1940.