The first to take the name Sakakibara was Sadanaga 's son , who resided in Sakakibara in Ise Province .
The family was descended from Nikki Sadanaga of the Seiwa Genji branch of the Minamoto clan .
The first to take the name Sakakibara was Nikki Sadanaga 's son , who resided in Sakakibara in Ise Province .
The family was descended from Nikki Sadanaga of the Seiwa Genji branch of the Minamoto clan .