The clan developed a number of schools of martial arts during this period, known as Ogasawara-ryū, and contributed to the codification of bushido etiquette.

[2] Towards the end of the Sengoku period (late 16th century), the clan opposed both Toyotomi Hideyoshi and Tokugawa Ieyasu.

[1] Broadly, there are two genealogical lines of the Ogasawara, the Matsuo and the Fukashi, each of which identify places in Shinano.

The area controlled by his descendants grew to encompass the entire province of Shinano.

Amongst his descendants in the 8th generation was Yoshinaga, who established himself at Miyoshi in Awa province (now Tokushima Prefecture).