TAKEDA BUSHO HARA HAYATO SA MASATANE
Book: Kai Kokushi, 96th volume
Notable Individuals, 5th section
Pg. 738 2nd paragraph
In a town below Shinshu, there is a document that has 2 signatures, which presently is amended. The center of this is Masatane, Kaga Mori’s boy (son). Taking over his father’s work protecting our (Takeda’s) army, Masatane was the brigade leader of a group consisting of 220 cavalry. He was also an attendant to an outside lord, with 50 cavalry troops under him. (at an average, Kaga Mori had a cavalry of 90 under him).
In Tenshō 3rd year (1575) May 21st, Masatane died in battle during the “Sanshū Nagashino no Tatakai”. His Buddhist name was Chōgen.
Within the burial records in Mikawa no Kuni, Hayato Sa’s grave is in a large bamboo field of Nagashi (today’s Nagashi in Shinshiro City, Aichi Prefecture)¹.
In the Spring², once again the 2nd successor Hayato took up the same work with Yamagata Saburōe, and later worked together with Atobe Ōisuke. There are places that have documents where one can see the names of these Hayato written quite consistently.
HARA HAYATO SA³
It is written at the mandala of Renchōji that Hayato Sa Chōgen was blessed with a son. After being employed at Nagashi castle, he inherited the title “Masa” (prosperous). As written in the Gunkan, Hara Hayato, the prized group commander of the lower division of Zen castle in Jōshū, was the 1st to ride out into battle, and suffered an injury. As it was a severe one, he was left behind in Kōfu, where he died. (in the Kosennosen, it is said that Hayato Masakatsu did not die at Nagashi, but died in Zenjō⁴).
From researching the Hao lineage chart, it seems that the title of Hayato was passed down from sibling to sibling, as shown through the following.
Unno Teruyuki, the 3rd son of Kagesaki (a Vice Civil Administrator) had one son and two daughters. The oldest daughter got married with a kenmotsu (auditor), who was the oldest son of Hayato. The previous kenmotsu that married to the daughter of the 2nd successor Nakamu Yukisada (aka Yazawa “Satsumamori” Yoritsuna), is Nezu Saeemon. It is said that Yoritsuna had 2 girls and one boy, and it was the oldest girl who married to Hara Hayato’s oldest son, who was a kenmotsu. Thus, the previous kenmotsu was the 2nd successor Hayato, while the later kenmotsu was the 3rd successor Hayato.
Through this, it becomes known that Sanada Saemon was able to become the 3rd successor Hayato through reestablishing a sibling link.
As mentioned above, The previous kenmotsu was the 2nd successor Hayato, while the later kenmotsu was the 3rd successor Hayato. By this, it appears that the title was passed down from sibling to sibling. Conclusively, it becomes known that Sanada Saemon was able to become the 3rd successor Hayato through reestablishing a sibling link.
1) This is the same information noted on the fixtures of Renchoji, such as the mortuary tablet, and on the area where the mandala sits.
2) In the original text, the time period of Spring is described as “when the sign for pine trees and plum trees to grow arrived”
3) Another name is Shōei
4) This is a theory by the 2nd successor Hayato named Masazumi in documentations such as Sandaiki