Princess Setsuko

Setsuko 雍仁親王妃勢津子
Princess Chichibu
Princess Chichibu, c. 1928
Born	(1909-09-09)9 September 1909 Walton-on-Thames, London, England, UK
Died	25 August 1995(1995-08-25) (aged 85) Tokyo, Japan
Burial	Toshimagaoka Imperial Cemetery, Bunkyo, Tokyo
Spouse	Yasuhito, Prince Chichibu (m. 1928–1953; his death)
Full name Setsuko (勢津子?)
House	Imperial House of Japan
Father	Tsuneo Matsudaira
Mother	Nobuko Nabeshima
Religion	Shinto

Styles of Princess Chichibu
Reference style	Her Imperial Highness
Spoken style	Your Imperial Highness
Alternative style	Ma'am

Setsuko, Princess Chichibu (雍仁親王妃勢津子, Yasuhito Shinnōhi Setsuko^?), born Setsuko Matsudaira (松平節子, Matsudaira Setsuko^?, 9 September 1909 – 25 August 1995), was a member of the Japanese Imperial Family. The Princess was the wife of Prince Chichibu, the second son of Emperor Taishō and Empress Teimei. She was, therefore, a sister-in-law of Emperor Shōwa and an aunt of the present emperor, Akihito.

She was born in Walton-on-Thames, England. Her father Tsuneo Matsudaira (1877–1949) was Japanese ambassador to the United States (1924) and later to Great Britain (1928), and still later, Imperial Household Minister (1936–45, 1946–47). Her mother was the former Nobuko Nabeshima.

Although technically born a commoner, she was a scion of distinguished aristocratic families with close ties to the Japanese Imperial Family on both sides. Her paternal grandfather, Katamori Matsudaira, was the last daimyo of Aizu, a cadet branch of the Tokugawa dynasty. Her maternal grandfather was Marquis Naohiro Nabeshima, former daimyo of Saga. Her mother's elder sister, Itsuko (1882–1976), married Prince Morimasa Nashimoto, an uncle of Empress Kōjun.