[1] Antun Belglava was born in Zadar on 16 April 1730 to a noble family.
Returned to Zadar, he became chancellor of the diocese, holding also the position of canon of the chapter in Nin.
His ecclesiastical career followed with the appointment as protonotary apostolic and, in 1767, he became canon of the chapter of Zadar Cathedral.
[1] In 1778, Pope Pius VI offered him to be bishop of Zakynthos, but he gently refused.
[2] Due to his ministry, he never succeeded to complete his work of correction of Glagolitic liturgical books.