Ogasawara clan
The "fudai" Ogasawara clan originated in 12th century Shinano Province. They claim descent from Takeda Yoshikiyo and the Seiwa-Genji. Broadly, there are two genealogical lines of the Ogasawara, the Matsuo and the Fukashi, each of which identify places in Shinano. The Matsuo line gave rise to the Ogasawara of Echizen, and the Fukashi line is ultimately established at the Ogasawara of Bunzen.