Catherine, † 1380; O.P. tertiary, mystic, and author (The Dialogue); peacemaker within the Church and renewer of religious life; worked toward ending the Avignon papacy under Gregory XI (1377); declared doctor of the Church in 1970; patroness of Italy and, together with St. Bridget of Sweden (23 July) and St. Teresa Benedicta of the Cross [Edith Stein] (9 Aug.), co-patroness of Europe.