Sixtus
the third of that name who occupied the papal chair, succeeded Coelestinus in A. D. 432, and died A. D. 440.
He is known as an author merely from some formal letters possessing no particular interest. They will be found in the
Epistolae Pontificum Romanorum of Coustant, vol. i. p. 1229. fol. Paris, 1721, and in the
Bibliotheca Patrum of Galland, vol. ix. p. 518, fol. Venet. 1773.
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