In, 1638, Ōta Sukemune, the grandson of Ōta Yasusuke, was granted Nishio Domain in Mikawa Province; and then, in 1645, he and his family was transferred to Hamamatsu Domain (35,000 koku) in Tōtōmi Province.
The head of this clan line was ennobled as a "Viscount" in the Meiji period [REF].