I agree with Jan, the province in question can not be Sideath.
Sideath is about 80 to 90 miles to the north east of the province in
question.
The province without a name is iin between:
Cariele Mountainsedge North-west side
Mhoried Torien's Watch South-west side
Markazor Riverspring and Shattered Hills East side
Tuarhievel Bhindraith North side

In the adventure Warlock and the Stonecrowns, they provide a map that
shows
the province with no name. All of the other provinces on the map are named
except
for that one.
Anyone know?
Bob V.