Note 113
As the adventures of Proba and her family are connected with the life of St. Augustin, they are diligently illustrated by Tillemont, Mem. Eccles. tom. xiii. p. 620-635. Some time after their arrival in Africa, Demetrias took the veil and made a vow of virginity; an event which was considered as of the highest importance to Rome and to the world. All the 'Saints' wrote congratulatory letters to her; that of Jerom is still extant (tom. i. p. 62-73, ad Demetriad. de servanda Virginitat. [Epist. cxxx. tom. i. p. 969, ed. Vallars.]), and contains a mixture of absurd reasoning, spirited declamation, and curious facts, some of which relate to the siege and sack of Rome.
The History Of The Decline and Fall Of The Roman EmpireChapter 31