Matsunaga clan mon
|Parent house||Fujiwara clan|
|Founder||Matsunaga Hisahide - Yamato Matsunaga clan|
|Founding year||16th century|
The lineage of Matsunaga Danjo Hisahide strengthen the Matsunaga clan's claim to Fujiwara lineage through Hisahide's nephew, Tadatoshi Naito (also known as Naito Joan and Fujiwara John). Tadatoshi Naito's mother was Naito Sadafusa who was from the Naito clan. The Naito clan are descended from Fujiwara no Hidesato (Hokke (Fujiwara)). Tadatoshi Naito would serve as lord of Yagi castle. 
Hisahide's granddaughter, Matsunaga Teitoku (松永貞徳} also strengthened the Matsunaga clan's link to the Fujiwara clan. Her mother was the older sister of Fujiwara Seika (藤原惺窩). Teitoku's cousin was Tadatoshi Naito.
Mikawa Matsunaga clan
It was a powerful clan in the Mikawa Province. Matsunaga Heiza'emon (松平平左衛門) served Matsudaira Kiyoyasu (松平清康), who was the 7th head of the Matsudaira clan and grandfather of Tokugawa Ieyasu. Heiza'emon's son, Genzo (源藏) served Ieyasu which can be seen in Kansei Choshu Shokafu (genealogies of vassals in Edo Bakufu). The Matsunagas in this clan used the tsuta mon (ivy) as their family crest.
Descendants of this clan continued to serve the Tokugawa Bakufu. Other Japanese people, who used the Matsunaga name, originated from this area. Some emigrated to Hawaii, United States and Brazil in the late 1800s.
Spark Matsunaga may be a descendant of this clan.
Yamato Matsunaga clan
The Matsunaga clan that follows the lineage of Matsunaga Danjo Hisahide (松永弾正久秀) is the most famous in Japan. Hisahida was the daimyō of the Yamato Province during the Sengoku period. He was born in the year of 1508 and shares the same roots with the Fujiwara clan as the Matsunaga clan in the Mikawa Province. They both used the same tsuta-mon (ivy) as their family crest. In Japan, when people think of the Matsunaga clan, it is usually Hisahide they are referring to.
Hizen and Higo Matsunaga Clans
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. Hikobe's descendant became retainers of the Saga Domain. They include Matsunaga Munetomo (松永宗伴) as a retainer of the Saga Domain and Matsunaga Shouemon (松永所右衛門) as a retainer of Kashima Domain which was a branched domain of the Saga Domain.
There was also another Matsunaga clan that was started by Kuen (松永空圓), a Buddhist monk who claimed himself as a younger brother of Matsunaga Hisahide. Their family crest is the pattern based on Japanese ginger and similar patterns but not the ivy ones (tsuta-mon) which had given from the Ryuzoji clan (龍造寺氏) which was one of the warlords that dominated the area.
Descendants of Matsunaga Danjo Hisahide
The following are descendants of Hisahide:
- Matsunaga Munetomo (松永宗伴)
- Matsunaga Shouemon (松永所右衛門)
- Matsunaga Masatoshi (松永正敏 1851-1912) - Lieutenant General of the Imperial Army and Order of Second Class Baron.
- Matsunaga Toh (松永東 1887-1968) - Chairman of the 45th House of Representative with Matsunaga family roots in Karatsu, Saga.
- Matsunaga Hikaru (松永光 born 1928) - the Liberal Democratic Party (LDP) politician who briefly served as finance minister from 27 January to 30 July 1998.
- Matsunaga Sadaichi (松永貞市 1892-1965) - Vice Admiral of the Imperial Japanese Navy. He adopted the Matsunaga name after marrying the daughter of Izuyo Matsunaga. His son is Ichiro and granddaughter, Mari.
- Matsunaga Ichiro (松永市郎 1919-2005) - Imperial Navy Captain and the father of Mari.
- Matsunaga Mari (松永真理 1954–present) - founder of i-mode mobile service in Japan. Mari is currently serving as board of director for Rohto Pharmaceutical Co., Ltd., and Seiko Epson Corporation.
Other Danjo Hisahide descendants are spread across Saga, Nagasaki, and Fukuoka Prefectures. Some descendants moved from Kyushu to the Saitama Prefecture with others immigrating to the United States in the late 1960s and early 1970s.
- The Origin, History, and Crest of the Family Name Matsunaga from Saga
- "Matsunaga Hisahide: Daimyo, Infamous Schemer, and Tea Enthusiast". kristineohkubo.wordpress.com.
- "Naito Joan - SamuraiWiki". wiki.samurai-archives.com.
- Writers, YABAI. "The Villainous Matsunaga Hisahide - YABAI - The Modern, Vibrant Face of Japan". YABAI.
- "武家家伝＿三好氏". www2.harimaya.com.
- "Patternz helps Japanese families find their family crests (kamon)". 16 July 2018.