Portrait of a prelate, possibly Arnold Hoensbroeck de Ostammol (before 1600-1655), full-length, standing at the table, a letter in his right hand

The tentative identification of the sitter in this painting to Arnold Hoensbroeck de Ostammol is based on the coat-of-arms with a pearled crown on the right of the canvas, which was most likely to have been added later in the 17th century. The second coat-of-arms, contemporary with the painting, remains as yet unidentified. The Hoensbroeck family, to whom the painting almost certainly belonged, originated from Limburg, Prussia and Austria and were made Barons of the Holy Empire in 1635; Counts de Geul, 1660; and Counts of the Holy Roman Empire in 1678. Their coat-of-arms was probably added to this painting after 1675, when Arnold Hoensbroeck became a Marquis.

The portrait shows affinities with Genoese artists such as Giovanni Bernardo Carbone (1614-83), who was in turn influenced by Van Dyck. The prelate stands before the colonna vitinea of Bernini's baldacchino, which was frequently used in Genoese portraits during the first half of the Seicento; for example, the Portrait of a young Genoese nobleman, variously attributed to Van Dyck and a youthful Rubens in the Palazzo Rosso, Genoa.