Jan Stanisław Jabłonowski

Through Anna, he was the uncle of King Stanisław Leszczyński and grand-uncle of Queen Maria Leszczyńska.

Despite this family relationship, in 1704, he took part in the Confederation of Sandomierz which supported Augustus II the Strong against his nephew.

[1] After Augustus was dethroned, he was suggested as a possible candidate, but never put himself forward; as part of the Northern Wars, Stanisław I Leszczyński was already supported by Karl XII.

On his behalf, in 1713, he sought to dethrone Augustus, for which he was arrested on 7 August and released in 1717 by the Silent Sejm.

He is portrayed in the novel Za Sasów of Józef Ignacy Kraszewski as a philosopher concerned for the fate of his country.