BiographyToshinaga Maeda was the eldest son of Toshiie Maeda, a samurai warrior from Araki, Owari Province. Toshinaga was born in 1562, and fought his first battle alongside his father at the Battle of Shizugatake in 1583, fighting for his father's allies, the Shibata clan. After the defeat at Shizugatake, the Maeda clan switched their allegiance to Hideyoshi Hashiba. Toshinaga married Nobunaga Oda's daughter Ei Oda, but had no children in his life.
When his father died in 1598, Toshinaga became the daimyo, and chose to fight alongside Ieyasu Tokugawa in the Sekigahara Campaign, although his cousin Keiji Maeda fought for the Western Army. Toshinaga Maeda fought at the Battle of Sekigahara in 1600, and recieved Toshimasa Maeda's territory after the battle. The Maeda clan controlled Kaga, Noto, and Etchu provinces after the Battle of Sekigahara, ceded to them by the Tokugawa Shogunate. In 1614, Toshinaga Maeda fell ill and died, and his brother Toshitsune Maeda took over his territory, because Toshinaga died childless.