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St. Catherine of Siena (born March 25, 1347, Siena, Tuscany [Italy]—died April 29, 1380, Rome; canonized 1461; feast day April 29) was an Italian mystic and Dominican tertiary who is one of the most revered holy women in the Roman Catholic Church. One of the patron saints of Italy, she was declared a doctor of the church (a title granted to saints whose writings are of special importance) in 1970 and a patron saint of...