Matsudaira Kiyoyasu (September 28, 1511 – November 29, 1535) served as the 7th lord of the Matsudaira clan during Japan's tumultuous Sengoku period. Renowned as the paternal grandfather of Tokugawa Ieyasu, one of Japan's "great unifiers," Kiyoyasu expanded his clan’s influence, bringing all of northern Mikawa Province under his control after subduing the Saigo clan. His power was further symbolized by the construction of Okazaki Castle, a testament to the Matsudaira’s growing dominance.
Matsudaira Hirotada (June 9, 1526 – April 3, 1549) was a daimyo and lord of Okazaki Castle in Mikawa Province during Japan’s turbulent Sengoku Period. He is best known as the father of Tokugawa Ieyasu, the founder of the Tokugawa shogunate.
Ikeda Tsuneoki (1536 – May 18, 1584), also known as Ikeda Nobuteru, was a prominent daimyo of the Ikeda clan and a distinguished military commander during Japan's Sengoku and Azuchi-Momoyama periods. He served under the influential warlords Oda Nobunaga and Toyotomi Hideyoshi. Tsuneoki’s connection to Nobunaga began early, as his mother, Yotokuin, was Nobunaga’s wet nurse and later became a concubine to Oda Nobuhide, Nobunaga's father.
Oda Nobutaka (1558–1583) was a samurai of the Oda clan, also known as Kanbe Nobutaka after being adopted as the head of the Kanbe clan, which governed the central region of Ise Province. He was the third son of Oda Nobunaga, born to a concubine named Sakashi. Nobutaka was referred to as "San Shichi," possibly because he was born on the seventh day of the third month in the Japanese lunar calendar. However, there is a theory suggesting he was born twenty days earlier than his elder brother, Oda Nobukatsu, but due to delays in reporting and the low status of his mother’s family, he was acknowledged as Nobunaga’s third son.
Yamauchi Kazutoyo (also spelled Yamanouchi; 1545/1546? – November 1, 1605) was a prominent samurai and retainer who served Oda Nobunaga and later Toyotomi Hideyoshi during Japan's Sengoku and Azuchi-Momoyama periods. His father, Yamauchi Moritoyo, was a descendant of Fujiwara no Hidesato and a senior retainer of the Iwakura Oda clan, which opposed Oda Nobunaga. Moritoyo was also the lord of Kuroda Castle in Owari Province. Kazutoyo is especially renowned for his marriage to Yamauchi Chiyo, whose wisdom and resourcefulness played a key role in his rise to prominence.
Saito Tatsuoki (6 September 1548 - 1573) was a daimyo of Mino Province during Japan's Sengoku period and the third-generation lord of the Saito clan. He was the son of Saito Yoshitatsu and grandson of Saito Dosan. His mother was a daughter of Azai Hisamasa, making him a nephew of Azai Nagamasa and a relative of Oda Nobunaga's first wife, Nohime, who was also a daughter of Saito Dosan.
