One of a series of 22 portraits of Polish kings commissioned for the Marble Room at the Royal Castle in Warsaw. The painting is listed in the 1795 catalogue of the Stanisław August collection under no. 1160. Kazimierz III the Great (1310–70) of the Piast dynasty, King of Poland (reg. 1333–70). Inscribed on the back: CASIMIRUS/ MAGNUS/ Vladislaj Loctici Filius,/ Magnus nuncupatus, quod Le=/gum Tabulas collegit, et auxit. Urbes/ multas condidit, ornavit, et munivit./ Russiam rubram Armis subactam/ certô Foedere Regno Poloniae adjunxit/ Cives voluit, et fecit esse beatos./ Piastorum e Domô ultimus REX./ Obijt Cracoviae Ao 1370./ AEtatis suae 60./ Regni vero 37/ Nro 4. The marble plaque beneath the painting is inscribed: CASIMIRUS MAGNUS/ + MCCCLXX.