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. 1166. Jan I Olbracht (1459–1501) of the Jagiellon dynasty, King of Poland (reg. 1492–1501). Inscribed on the back: JOANNES/ Albertus./ Filius Casimiri Jagiellonidis,/ Natus d: 27. Xbris. Ao 1460./ Regnare coepit 7. Aug: Ao 1492./ Obijt Thorunij,/ d: 17. Junij Ao 1501./ AEtatis suae 41./ Regni vero 9./ Nro 10. The marble plaque beneath the painting is inscribed: JOHANNES ALBERTUS/ + MDI.