From the information I have at the moment. I decided to build a map of the parishes of Dywin, Horodec, Janow (Iwanowo), Braszewicze, Bezdziez for 1721.
The general picture on the map is as follows:
Approximately visible are the territories that were occupied by the paraafias. Now about each one in a little more detail.
Dywin:
The parafia’s membership includes:
Dywin Nowosiolki Bielsk Mokrzany Lachowce Ofsa (not on the map, couldn’t find) Horodec: