Katsushika Ōi

Who They Were

Katsushika Ōi (葛飾応為, かつしか おうい) was a Japanese painter and ukiyo-e artist of the Edo period. She was born in Edo, the city that is now Tokyo, around 1800 and died around 1866. She was a daughter of Katsushika Hokusai, the most famous ukiyo-e artist in Japanese history, and she worked both as an independent painter and as her father's production assistant.

Ukiyo-e (浮世絵, うきよえ) means "pictures of the floating world" — woodblock prints and paintings of actors, courtesans, landscapes and everyday city life that flourished in Japan's growing urban culture. Ōi belonged to the final decades of that tradition, and she was one of the very few women in it to be recognised as a serious painter rather than a curiosity.

Life and Career

Ōi was born in Edo in roughly 1800, in the twelfth year of the Kansei era (寛政, かんせい). Her father was Hokusai; her mother was his second wife. She grew up inside a working artist's household, which in Edo meant brushes, pigments, woodblock proofs and deadlines rather than formal schooling in the polite arts.

She became a painter in her own right and also served as Hokusai's assistant. In a studio that produced enormous volumes of work — Hokusai was in his seventies and eighties during Ōi's adult years and continued painting until his death — an assistant did far more than sweep the floor. Ōi is associated with the fine detail and colour work in some of the studio's output, and she is credited with paintings of her own, including scenes of women in interiors and night scenes lit by lantern or moon.

She also worked in Osaka, away from the family base in Edo, which suggests she took on commissions independently rather than remaining permanently at her father's side. She never married, and she is not recorded as having children. She outlived Hokusai, who died in 1849, by roughly seventeen years.

Why They Matter

Ōi matters for two reasons that reinforce each other. First, she was a genuinely skilled painter in a field where women were almost entirely excluded from professional recognition. Edo-period Japan had women artists, but very few who signed their work, took commissions, or were remembered by name in the histories of ukiyo-e.

Second, she is inseparable from the late work of Hokusai. The paintings and prints of his final decades are the product of a studio, and Ōi was central to it. Understanding her is part of understanding how that studio actually functioned — not as a lone genius at a desk, but as a small workshop with a highly capable second hand.

Her reputation rests on a small surviving body of work and on the testimony of those who knew the household. That thin record is itself informative: it shows how easily a woman's professional career could be absorbed into her father's name.

The Name in Japanese

Her name in Japanese is 葛飾応為, read かつしか おうい (Katsushika Ōi). The family name comes first, as is standard in Japanese.

葛飾 (かつしか, Katsushika) — the family name, shared with her father Hokusai. It is a place-derived surname, taken from the Katsushika district on the eastern edge of Edo.

• 葛 (read かつ, katsu) — arrowroot, a climbing vine whose starch was used in cooking and medicine.
• 飾 (read しか, shika) — to decorate, adorn, or ornament.

応為 (おうい, Ōi) — her given name.

• 応 (read おう, ō) — to respond, comply, or answer; also used in the sense of "suitable" or "corresponding."
• 為 (read い, i) — to do, to make, to accomplish; a verb of action and production.

The name is unusual, and the second character, 為, carries a strong sense of making and doing — fitting for a painter. She also appears in records as 栄 (えい, Ei) and お栄 (おえい, O-Ei), where お is an honorific prefix used for women's names, and as 栄女 (えいじょ, Ei-jo), literally "woman Ei." These alternate forms are why English-language sources sometimes call her "O-Ei" rather than Ōi.

Legacy

Ōi's work has been preserved in a small number of surviving paintings, and her name appears in accounts of Hokusai's household written by people who knew the family. For most of the twentieth century she was treated as a footnote to her father. That changed as scholars of ukiyo-e began looking seriously at the women inside Edo-period workshops and at the division of labour between a master and his assistants.

She is now regularly named as one of the notable women artists of the Edo period, and her paintings are discussed on their own terms rather than only as evidence about Hokusai. Her dates — roughly 1800 to roughly 1866 — place her across the last decades of the Tokugawa order, which ended in 1868, two years after her death. She therefore belongs to the closing chapter of ukiyo-e as a living commercial art, and to the small group of women whose names survived it.