History of Tykocin

The name of Tykocin was first mentioned in the 11th century and through the 14th century it was a Duchy of Masovian castellany seat and castle on the Masovian border neighboring the growing medieval pagan Lithuania. Tykocin received city rights from prince Janusz I of Warsaw in 1425, but several months later it was given to Grand Duchy of Lithuania by the Polish king Władysław II Jagiełło.

Shortly later, or about 1433 AD, Duke Sigismund Kęstutaitis gave the town along with other towns to Jonas Gostautas, and it became the most important power seat of that Lithuanian magnate Gostautai family clan. During the