Four Families of the Ryūzōji
The Four Families of the Ryūzōji were four families from the Ryūzōji clan folded into the governance structure of the Saga domain and treated similarly to family members by the Nabeshima clan in the Edo period.
Nabeshima Naoshige determined that, for the effective conduct of domain affairs, a reconciliation was needed between the Nabeshima clan and the families comprising the Ryūzoji clan. Among the members of the Ryūzōji family, he gave priority to four influential lineages and gave them the same status as member of the Nabashima clan.
These families had landholdings in Isahaya, Suko, Taku, and Takeo so were called the Isahaya-Nabeshiima, the Suko-Nabeshima, the Taku-Nabeshima, and the Takeo-Nabeshima. The Isahaya-Nabeshima called themselves the Isahaya clan and the Taku-Nabeshima called themselves the Taku clan.
Isahaya-Nabeshima family: The lineage of Ryūzōji Ieharu. After the Meiji Restoration, invested with the status of a Baron.
Suko-Nabeshima family: The lineage of Ryūzōji Nobukane.
Taku-Nabeshima family: The lineage of Ryūzōji Naganobu. After the Meiji Restoration, invested with the status of a Baron.
Takeo-Nabeshima family: The lineage of Gotō Ienobu. After the Meiji Restoration, invested with the status of a Baron.