Hedwig Jagiellon was a Polish and Lithuanian princess, and a member of the Jagiellon dynasty. For most of her life she, as the only child of Władysław II Jagiełło, was considered to be heiress of the

Czerwińsk nad Wisłą is a town in Płońsk County, Masovian Voivodeship, in central Poland. It is the seat of the gmina called Gmina Czerwińsk nad Wisłą. The town has a population of 1,200.