In 1634 he was ordained as the apostolic administrator of Serbia.

Sometimes a retiring bishop is designated to be apostolic administrator until his successor takes office.

The see also does not become vacant if the Pope appoints an apostolic administrator.

He spent 1510 as apostolic administrator of the see of Amalfi.

Since then the vicariate has been led by an Apostolic Administrator.

He was later made vicar general (1892) and apostolic administrator (1894) for the diocese.

In accordance with canon law, an apostolic administrator was named for an open-ended interim period.

This type of apostolic administrator is usually the bishop of a titular see.

On 14 March 1519 he was appointed apostolic administrator of Bertinoro, keeping the job exactly one year.

He also became Apostolic Administrator of Toledo at this time.