- Saint Thomasthe Angelic Doctor, 1225?–74, Italian scholastic philosopher: a major theologian of the Roman Catholic Church.
- Saint. Aquinas, Saint Thomas.
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- Saint Thomas. 1225–74, Italian theologian, scholastic philosopher, and Dominican friar, whose works include Summa contra Gentiles (1259–64) and Summa Theologiae (1267–73), the first attempt at a comprehensive theological system. Feast day: Jan 28See also Thomism