BALLY (Bailly), PHILIBERT-ALBERT. — Theologian, born at Grésy-sur-Aire (Savoy) in 1605, died at Aosta in 1691, secretary to the Duke of Savoy Victor Amadeus I, left the court to enter the Barnabites at Thonon in 1632. He preached with good success against the Calvinists in Béarn and was later superior of the Barnabite house in Paris (1647), where he preached before Louis XIV. Having become bishop of Aosta in 1659, he was a zealous pastor and a determined opponent of the Jansenists.
He left panegyrics, pastoral letters (3 vols., plus some separate ones) and brief ascetical treatises with a Salesian tone: Traité sur l'oraison (Chambéry 1680); Traité de la véritable dévotion (Aosta 1684); Traité sur la Messe (ibid. 1685).
BIBL.: J.-M. Albin, Mémoire historique sur Ph.-A.B., Torino 1865; G. Boffito, Biblioteca degli scrittori Barnabiti, I, Firenze 1933, pp. 71-75; P. Frutaz, s. V. in DHG, VI, cols. 264-65.