The depiction of Marcin Poczobut was part of the Royal Castle’s historic collections. Alongside the sculptures of Chronos and Fame, as well as a series of bronze busts of famous Polish personages and the painted decoration, it constitutes the iconographic scheme for the Knights’ Hall which was furnished in the years 1781–6 and was intended to commemorate distinguished individuals as well as glorious events in Polish history. The sculpture is one of 18 smaller busts that were placed in the Knights’ Hall of contemporaneous personages which Le Brun could have portrayed ad vivum thanks to which it bears the model’s real features. Inscribed Poczobut on front, under the bust. Inscribed MART: POCZOBUT in gold letters on front of base. Marcin Poczobut (Poczobutt)-Odlanicki of the Pogoń coat of arms (1728–1810). Son of Kazimierz, Prefect of Grodzieniec and Helena née Hlebowicz. Jesuit, outstanding astronomer and mathematician. A long standing Professor and Rector (from 1780) and reformer of the Vilnius Academy (later the Principal School).