At first, it has been in the medieval city Sieciechów, but after the change of the Vistula river path, moved to a location where he stands to this day.
First urban center of this part of Lesser Poland was located in Sieciechów, whose parish church controlled areas both east and west of the Vistula.
The town of Sieciechów (Castrum Sethei), judging by Gallus, was named after Sieciech (Setheus).
Sieciechów (Sytykhiv), a village in Lviv Oblast of western Ukraine;
It had a parish church of St. Lawrence, which controlled parishes of large parts of northern Lesser Poland, at such towns, as Kozienice, Stężyca, Dęblin, Zwoleń and Kazimierz Dolny.