Mori Domain (Izumo)

 was a Japanese domain of the Edo period. It was associated with Izumo Province in modern-day Shimane Prefecture. 
In the han system, Mori was a political and economic abstraction based on periodic cadastral surveys and projected agricultural yields. In other words, the domain was defined in terms of "kokudaka", not land area. This was different from the feudalism of the West.
History.
The domain was ruled for the entirety of its history by a branch of the Matsudaira clan of Fukui.
List of "daimyōs".
The hereditary "daimyōs" were head of the clan and head of the domain.