From Tar Valon Library
Author: Toral Delvar
Mosra is a village in Altara on the banks of the Eldar. Thom hears rumors that Ailron means to claim it and works out that Pedron Niall is looking to control both banks, to squeeze the river trade to Ebou Dar and eventually capture the whole of Altara.
(Reference: The Fires of Heaven, Chapter 16).