Original caption: "Zbigniew. Fils naturel du Roi Wladislaw 1.er" Illustration by an anonymous artist (?) from volume 1 of La Pologne historique, littéraire
English Zbigniew Pakleza, Polish Chess Cup, Bydgoszcz 2021. Polish Zbigniew Pakleza, Puchar Polski w szachach, Bydgoszcz 2021. determination method: SHA-1