The author of the article draws a literary portrait of Jan Grotkowski (a forgotten poet of the Baroque period) based on four poetic works by Jan Andrzej Morsztyn. Consequently, an interesting figure of a writer, diplomat, and influential participant in international politics emerges from the darkness of oblivion. He is connected with the figure of Queen Bona only by a mysterious death. Thus, he is included in the list of people who, as Kantecki claims, “fell victims to the matter haunted somewhat by the curse of Queen Bona”. Trying to solve the issue of “Neapolitan sums,” Grotkowski, like Reszka, Mąkowski and others, died in unexplained circumstances.