Hilary of Poitiers [SEP] canonization status
continued to be highly influential in later centuries. Venantius Fortunatus wrote a "vita" of Hilary by 550, but few now consider it reliable. More trustworthy are the notices in Saint Jerome (De vir. illus. 100), Sulpicius Severus ("Chron." ii. 39-45) and in Hilary's own writings.
Pope Pius IX formally recognized him as "Universae Ecclesiae Doctor" in 1851.
In the Roman calendar of saints, Hilary's feast day is on 13 January, 14 January
for the fourth volume containing the commentaries on the Psalms. In an appendix to the fifth volume he collected all the spurious homilies and traced them to their true sources.
Hilary of Poitiers.
His work did not remain unnoticed by the Abbot General of the Maurist congregation. When Mabillon suggested a new edition of the works of Hilary of Poitiers, it was Coustant whom the abbot general selected. Before this time, there was only one defective and uncritical edition of Poitiers' work, published by Erasmus (Basle, 1523