[1][2] The lineage of Matsunaga Danjo Hisahide strengthens the Matsunaga clan's claim to Fujiwara lineage through Hisahide's nephew, Tadatoshi Naito (also known as Naito Joan and Fujiwara John).

Heiza'emon's son, Genzo (源藏) served Ieyasu which can be seen in Kansei Choshu Shokafu (genealogies of vassals in Edo Bakufu).

Other Japanese people, who used the Matsunaga name but were not samurai retainers, originated from this area.

Hisahide later committed seppuku after Oda Nobunaga besieged him at Shigisan Castle in 1577.

[9] Hisamichi, the heir of Hisahide, had a son named Hikobe’e Ichimaru or Kazumaru (彦兵衛一丸).

He moved down to Hakata, Chikuzen Province, opened a pawnshop, and became a wealthy merchant.

[1] Matsunaga Toh (松永東 [ja]), who served as the Chairman of the 45th House of Representative [ja] and the 79th Minister of Education, had Matsunaga family roots in Karatsu, Saga, at the time part of the Saga Domain.

Some descendants moved from Kyushu to the Saitama Prefecture with others immigrating to the United States in the late 1960s and early 1970s.