During the time of Morimasa TANI, the second head of the family, the Yamaga Domain subdivided the territory worth 1,500 koku to Morifuyu TANI (the younger brother; the Umezako Tani family), territory worth 2,500 koku to Moriyuki TANI (the nephew; the Uesugi Tani family), and territory worth 2,000 koku to Morikiyo TANI (the nephew in the Tokura Tani family) as hatamoto (direct retainers of the bakufu).
2代谷衛政の代に、弟の谷衛冬に1,500石（梅迫谷家）、甥の谷衛之に2,500石（上杉谷家）・谷衛清に2,000石（十倉谷家）を旗本として分知した。