His younger brother [[So Moriyo|Sô Moriyo]] oversaw Tsutsu district at the southern end of Tsushima Island. Sadamori's son [[So Shigemoto|Sô Shigemoto]] succeeded him as head of the Sô house and ruler of Tsushima. | His younger brother [[So Moriyo|Sô Moriyo]] oversaw Tsutsu district at the southern end of Tsushima Island. Sadamori's son [[So Shigemoto|Sô Shigemoto]] succeeded him as head of the Sô house and ruler of Tsushima. |