Jan Dantyszek was a child of his times – he was undoubtedly a Renaissance man for most of his life. His fame as a troublemaker and lecher, a diplomat with numerous contacts in various, as well as suspicious, circles, and then a strict Catholic bishop in Prussia (who nonetheless retained good relations with the Lutheran prince Albrecht) in connection with the somewhat unfortunate metaphor of conversion used by Stanisław Hozjusz to describe him as Saul into Paul, gave rise to the false view that Dantyszek favoured the Reformation for a long time and that it was only under the influence of Hozjusz (after his admission to the Warmian chapter in 1538) that he converted and become a militant Catholic. This misconception constantly reappears in the scholarship, and particularly in popular literature, but only one Polish-language monograph of Dantyszek has been published to date.