One panel is marked with the panel mark of the maker François de Bondt (DB) who was active 1637 - 43 in Antwerp.
Chapuis erroneously identifies the sitters with William of Orange and his queen Mary. The sitters are as yet unidentified but their portraits were undoubtedly intended for engraving.
Jean-Joseph Chapuis (1765 - 1864) was a important Belgian furniture maker whose works were included in the Empress Josephine's inventory at Malmaison at her death, as well as being part of other important collections. His formal trained took place in Paris and the most important collection of his work is in the Musée Charlier de Saint-Josee-ten-Noode in Brussels.
Collection of J.J. Chapuis according to a wax seal on the reverse;
his sale, De Doncker and Vergote, Brussels, 4th December 1865, lots 113 and 114;
bought as a pair by Henri Leroy, BFR 180