Vydritsa
Vydritsa was a settlement on the river of the same name in the lake country east of Sebezh. The river, later called the Idryanka, flows into the Velikaya. Sixteenth-century records of the Polotsk district preserve the older form of its name, and a settlement named Vydritsa existed here in that century. The name thus belongs to a landscape of rivers and lakes on the northern edge of the old Polotsk lands.