Hachisuka Iemasa

Who They Were

Hachisuka Iemasa (蜂須賀家政, はちすか いえまさ) was a samurai and daimyo whose life spanned the last decades of Japan's warring states period and the first decades of the Tokugawa peace. He was born in 1558 in Owari Province, in the region around modern Nagoya, the son of Hachisuka Masakatsu. He founded the Tokushima Domain on the island of Shikoku and his family ruled it until the end of the Edo period.

His career placed him at the centre of the three great unifiers' campaigns. He served Oda Nobunaga and then Toyotomi Hideyoshi, fighting at the Battle of Yamazaki in 1582, in the invasion of Shikoku in 1585, and in Hideyoshi's Korean campaign between 1592 and 1598. In 1600 he took the field for Tokugawa Ieyasu at the Battle of Sekigahara, and kept his lands as a reward. He died on February 2, 1639.

Life and Career

Iemasa's father, Hachisuka Masakatsu, was a retainer of Toyotomi Hideyoshi, and that connection shaped the son's path. Iemasa entered the service of both Oda Nobunaga and Hideyoshi. In 1582, the year Nobunaga was killed at Honnō-ji, Iemasa fought at the Battle of Yamazaki, where Hideyoshi destroyed Akechi Mitsuhide and seized the initiative among Nobunaga's former followers.

Three years later, in 1585, Hideyoshi invaded Shikoku, the smallest of Japan's four main islands. After Hideyoshi gained control of the island, Awa Province, at Shikoku's eastern tip, was granted to Hachisuka Iemasa together with Awaji Island, which lies in the strait between Shikoku and the mainland. He and his family were appointed lords of the fief with an income of 257,000 koku — a koku being the quantity of rice reckoned to feed one person for a year, and the standard measure of a domain's wealth.

From 1592 to 1598 Iemasa took part in Hideyoshi's Korean campaign, the two invasions of the Korean peninsula that ended with Hideyoshi's death. When Hideyoshi died in 1598, the country's most powerful lords split. In 1600, at the Battle of Sekigahara, Iemasa fought on the side of Tokugawa Ieyasu. Ieyasu's victory made him the effective ruler of Japan, and Iemasa was allowed to retain his fief for his service there. He is also remembered as one of the daimyo who were on bad terms with Ishida Mitsunari, Ieyasu's chief opponent at Sekigahara.

Why They Matter

Iemasa founded the Tokushima Domain, and the Hachisuka house held it for the whole of the Edo period — more than two and a half centuries of unbroken rule by one family over one territory. That continuity is the exception rather than the rule in Japanese history, where domains changed hands constantly through the sixteenth century.

His decision at Sekigahara mattered enormously for that outcome. By joining Tokugawa Ieyasu, he ended up on the winning side of the battle that decided who would rule Japan, and he preserved his fief as a result. The domain he established on Shikoku became a durable political unit with its own administration, castle town and samurai retainer band.

His career also illustrates the transition of the age. He began as the son of a retainer in the service of a rising warlord, fought through the unification wars and the Korean campaign, and ended as the hereditary lord of a substantial domain under the Tokugawa peace — the full arc from Sengoku chaos to settled Edo order in a single lifetime.

The Name in Japanese

The name is written 蜂須賀家政, read in kana as はちすか いえまさ, and romanised as Hachisuka Iemasa. The family name comes first, as is standard in Japanese; the given name follows.

Family name, 蜂須賀 (はちすか, Hachisuka):

• 蜂 — read here as hachi. It means "bee". The character is made of two parts: 虫, the insect radical, on the left, and 夆 on the right.
• 須 — read here as su. In this name it functions phonetically rather than for its meaning, which is "necessary" or "must". It is the character that gives the name its su sound.
• 賀 — read here as ka. It means "congratulation" or "celebration", and appears in many Japanese names and place names.

Given name, 家政 (いえまさ, Iemasa):

• 家 — read here as ie. It means "house", "home" or "family", and by extension "household" or "clan". It is one of the most common elements in samurai given names of this era, where the sense of the family line carried real weight.
• 政 — read here as masa. It means "government", "administration" or "political rule". It too is a frequent element in warrior names.

Together the given name reads as something like "house governance" — an apt name for a man who spent his life establishing and administering a domain. Note that the same characters can be read differently in other names; 家 is also read ka or ya, and 政 is also read sei or matsuri.

The reading of the family name is worth noting for learners: 蜂須賀 is not read with the standard on readings of its characters, which would give something like Hōshuga. It uses the native Japanese reading instead, a common pattern in surnames.

Legacy

The Hachisuka family ruled the Tokushima Domain until the end of the Edo period, exactly as the grant of 257,000 koku anticipated. Iemasa's son, Hachisuka Yoshishige, and the generations after him inherited the domain and the family name.

Iemasa's own line is recorded through his children: Yoshishige, along with 即心院, 阿喜姫 and Jissōin. His wife, known as 慈光院, was his principal consort. His father Masakatsu and his son Yoshishige bracket him in the family record, the three generations that carried the Hachisuka house from service under Hideyoshi to hereditary rule under the Tokugawa.

For students of Japanese, the name is a useful study case. It shows how surnames often use native readings rather than the Sino-Japanese readings of their characters, how given names of the period were built from a small stock of meaningful elements like 家 and 政, and how a single warrior's career can map the whole transition from the Muromachi period's collapse into the settled order of the Edo period.