04/05/2020
The maverick warrior and daimyo, the "Last Sengoku Samurai", Mizuno Katsunari died on this day, May 4, 1651
Mizuno Katsunari was born in Kariya Castle (Aichi Pref.) on September 20th, 1564, the son of Mizuno Tadashige. His father was also master of Ogawa Castle on the Chita Peninsula and Kanbe Castle (Mie Pref.) Mizuno Tadashige’s elder sister was Odai no Kata, wife of Matsudaira Hirotada, and mother of Tokugawa Ieyasu, making Mizuno Katsunari and Ieyasu cousins.
At the age of 16, under Oda Nobunaga’s banners, Katsunari took part alongside his father in the 1579 Battle of Takatenjin Castle (Shizuoka Pref.) held at the time by Takeda Shingen’s son, Takeda Katsuyori. At the time, Katsunari was suffering from a case of conjunctivitis and found wearing his kabuto helmet uncomfortable. Instead, he prepared for battle with just a hachimaki, cloth headband. Seeing this, his father was outraged and admonished him for not wearing his armor properly. (It is most probably that his father was in reality worried about his sons’ safety) Angered at his father’s outburst, Katsunari made sure he was among the first wave of attackers, and drove himself deeper than any other samurai into the enemy ranks, and became the “Ichiban Kubi” taking the first head in battle.
Despite his heroic efforts and having taken the first head, instead of praising his son, Mizuno Tadashige became even angrier at his son. The reason was, according to samurai rules of engagement, entering battle before the designated warrior and unit was considered most rude. In this case, Katsunari’s father had awarded the honor of leading the battle to another of his vassals, who was highly insulted by Katsunari’s sudden advances.
Katsunari would also take part in the Battle of Komaki Nagakute (1584)
The relationship between father and son would continue to deteriorate. Katsunari would later quarrel with one of his father’s vassals, and drawing his sword, cut him down, killing him. There are a number of stories regarding the reason behind this, the most quoted is that Katsunari wanted to borrow some money off his father’s retainer, but the retainer had refused. This angered Katsunari who apparently rudely pointed out that the man was his servant, therefore his property, and anything the man had was therefore Katsunari’s. The samurai rightly pointed out that he was in the employ of Lord Tadashige, not Katsunari, and so he refused. For this, Katsunari cut him down.
When his father found out, he was livid, and expelled his own son from his domains. Katsunari went to Kyoto, where he invited more trouble, arguing with various warriors and killing a few. Over the next four years, Katsunari would serve Toyotomi Hideyoshi, Sassa Narimasa, Kuroda Kanbe, then Kuroda Nagamasa, Konishi Yukinaga, Kato Kiyomasa, Tachibana Mueshige and others, each time either being expelled for arguing with the lords, or the other vassals, or through simply running away from trouble. Much of his history around this time remains unknown, as he wandered the country.
Katsunari had attempted to seek employment from his cousin, Tokugawa Ieyasu, however his father had made moves to block his son from being able to approach Ieyasu. Finally, around 15 years after being exiled, Tokugawa Ieyasu himself intervened, mending the rift between father and son. Katsunari himself appears to have mended his ways too, serving the Tokugawa loyally and bravely at the Battle of Sekigahara, the winter and summer Sieges of Osaka, and at the Shimabara Insurrection.
When Mizuno Katsunari died on May 4, 1651 at the age of 88, he was said to have been the last of the Sekigahara Eastern forces warriors, and last of the Sengoku warriors. He was enshrined as a god alongside Tokugawa Ieyasu at the Nikko Toshogu.