 However, Data Munekatsu was a central figure in the Date Sōdō, an "O-Ie Sōdō" over the succession to the Date clan and was dispossessed in 1671, with his holdings reverting to Sendai Domain.Iwanuma Domain was another 30,000 "koku" subsidiary domain of Sendai Domain, created in 1660 for Tamura Muneyoshi.It was located in what is now the city of Iwanuma, Miyagi.