Hilario a Jesu Costa, O.A.D. (1696–1754) was a Roman Catholic prelate who served as Apostolic Vicar of Eastern Tonking (1737–1754) and Titular Bishop of "Corycus" (1735–1737).
Biography.
Hilario a Jesu Costa was born in Pessinetto, Italy on 2 Sep 1696 and ordained a priest in the Ordo Augustiniensium Discalceatorum.
On 3 Oct 1735, he was appointed during the papacy of Pope Clement XII as Coadjutor Apostolic Vicar of Eastern Tonking and Titular Bishop of "Corycus".
On 11 Nov 1736, he was consecrated bishop by Thomas Bottaro, Titular Bishop of "Nyssa". 
On 3 Oct 1735, he succeeded to the bishopric.
He served as Apostolic Vicar of Eastern Tonking until his death on 31 Mar 1754.
While bishop, he was the principal consecrator of Louis Néez, Apostolic Vicar of Western Tonking and Titular Bishop of "Comana Armeniae" (1739).
References.
 ;templatestyles src="Reflist/styles.css" / ;