TAKIGAWA Kazumasu is a vassal od ODA Nobunaga and is thought to be one of ODA Shitenno, the Four Paladins of Oda. The details of the first half is unknown.
He is said to have serve Nobunaga in 1550s and negotiated with MATSUDAIRA Motoyasu (TOKUGAWA Ieyasu) to be allied with his lord. He participated in the Siege of Ichijodani Castle and the Battle of Nagashino. In 1582, he drove TAKEDA Katsuyori into a corner and made him commit suicide. After the fall of the Takeda clan, he was granted Kozuke and the counties of Chiisagata (*) and Saku.
He had his base in Mayahashi Castle in Kozuke to rule Kanto area. But after the Honnoji Incident, he was forestalled by HASHIBA (TOYOTOMI) Hideyoshi in attacking AKECHI Mitsuhide. Then he fought against the Hojos and departed for his base Ise Nagashima (current Kuwana). On his way he handed his hostages from Chiisagata and Saku (**) to KISO Yoshimasa in exchange for passing through his fief.
But he was late for the Kiyosu conference, meeting of daimyos to talk about who should become the head of the Oda clan. So he allowed Hideyoshi to take the initiative in it. He once opposed Hideyoshi but took his side in the Battle of Komaki and Nagakute. He died at 62 in 1586.
In this series, he is loyal to ODA Nobunaga and rules Chiisagata and Saku. But after the Honnoji Incident, SANADA Masayuki, local ruler of Chiisagata keeps the death of Nobunaga secret from him on purpose. And during his fight against the Hojos, Masayuki takes back the castles once controlled by Kazumasu and it makes him angry.
(*)Most of Chiisagata is current Ueda City in Nagano.
(**)Mother of Masayuki, who is called Tori in "Sanada Maru" is included in them.
The image shows Yasunori Danda as Takigawa Kazumasu
(From a DVD of Sanada Maru)