Nobuhito, Prince Takamatsu

In 1991 the prince's wife Kikuko, Princess Takamatsu and an aide discovered a twenty-volume diary, written in Prince Takamatsu's own hand between 1934 and 1947. Despite opposition from the entrenched bureaucrats of the Imperial Household Agency, she gave the diary to the magazine Chūōkōron, which published excerpts in 1995.

Prince Takamatsu died of lung cancer on February 3, 1987, at the Japanese Red Cross Medical Center (ja, located in Shibuya, Tokyo). His remains were buried at Toshimagaoka Cemetery located in Bunkyō, Tokyo.

After the Battle of Saipan in July 1944, Prince Takamatsu joined his mother Empress Teimei, his uncles Prince Higashikuni, Prince Asaka, former prime minister Konoe Fumimaro, and other aristocrats, in seeking the ouster of the prime minister, Tojo Hideki.

In 1975, the Bungei Shunjū literary magazine published a long interview with Takamatsu in which he told of the warning he made to his brother Hirohito on November 30, 1941, the warning he made to him after Midway and that, before the surrender, he and Prince Konoe had considered asking for the emperor's abdication. The interview implied that the emperor had been a firm supporter of the Greater East Asia War (Japanese name of the Pacific War in those days) while the prince was not.

The diary revealed that Prince Takamatsu bitterly opposed the Kwantung Army's incursions in Manchuria in September 1931, the expansion of the July 1937 Marco Polo Bridge Incident into a full-scale war of aggression against China and in November 1941 warned his brother, Hirohito, that the Imperial Japanese Navy could not sustain hostilities for longer than two years against the United States. He urged Emperor Shōwa to seek peace after the Japanese naval defeat at the Battle of Midway in 1942; an intervention which apparently caused a severe rift between the brothers.

On 4 February 1930, Prince Takamatsu married Kikuko Tokugawa (26 December 1911 – 18 December 2004), the second daughter of Yoshihisa Tokugawa (peer). The bride was a granddaughter of Yoshinobu Tokugawa, the last Shōgun of the Tokugawa shogunate, and a granddaughter of the late Prince Arisugawa Takehito. Shortly after the wedding, Prince and Princess Takamatsu embarked upon a world tour to Europe and then across the United States so as to strengthen the goodwill and understanding between Japan and those nations. The 1930-1931 photo to the right presents Princess and Prince Takamatsu during their honorary reception given by U.S. President Herbert Hoover who escorted them down Pennsylvania Avenue in Washington, D.C. as thousands of excited spectators looked on. Prince Tokugawa Iesato (also known as Prince Iyesato Tokugawa) was the uncle of Prince and Princess Takamatsu. Prince Tokugawa allied with Prince and Princess Takamatsu on many international goodwill projects.

From the 1930s, Prince Takamatsu expressed grave reservations regarding Japanese aggression in Manchuria and the decision to wage war on the United States.

Prince Takamatsu attended the Imperial Japanese Naval Academy from 1922 to 1925. He received a commission as an ensign on 1 December 1925 and took up duties aboard the battleship Fusō. He was promoted to sub-lieutenant the following year after completing the course of study at the Torpedo School. The prince studied at the Naval Aviation School at Kasumigaura in 1927 and the Naval Gunnery School at Yokosuka in 1930 - 1931. In 1930, he was promoted to lieutenant and attached to the Imperial Japanese Navy General Staff in Tokyo. He became a squadron commander of cruiser Takao, two years later and subsequently was reassigned to the Fusō. Prince Takamatsu graduated from the Naval Staff College in 1936, after having been promoted to lieutenant commander on 15 November 1935. He was promoted to the rank of commander on 15 November 1940 and finally to captain on 1 November 1942. From 1936 to 1945, he held various staff positions in the Naval General Staff Office in Tokyo.

Nobuhito, Prince Takamatsu (高松宮宣仁親王, Takamatsu-no-miya Nobuhito Shinnō, 3 January 1905 – 3 February 1987) was the third son of Emperor Taishō (Yoshihito) and Empress Teimei (Sadako) and a younger brother of Emperor Shōwa (Hirohito). He became heir to the Takamatsu-no-miya (formerly Arisugawa-no-miya), one of the four shinnōke or branches of the imperial family entitled to inherit the Chrysanthemum throne in default of a direct heir. From the mid-1920s until the end of World War II, Prince Takamatsu pursued a career in the Japanese Imperial Navy, eventually rising to the rank of captain. Following the war, the prince became patron or honorary president of various organizations in the fields of international cultural exchange, the arts, sports, and medicine. He is mainly remembered for his philanthropic activities as a member of the Imperial House of Japan.

Nobuhito was born at the Aoyama Palace in Tokyo to then-Crown Prince Yoshihito and Crown Princess Sadako. His childhood appellation was Teru-no-miya (Prince Teru). Like his elder brothers, Prince Hirohito and Prince Yasuhito, he attended the boy's elementary and secondary departments of the Peers' School (Gakushuin). When Prince Arisugawa Takehito (1862–1913), the tenth head of the collateral imperial house of Arisugawa-no-miya, died without a male heir, Emperor Taishō placed Prince Nobuhito in the house. The name of the house reverted to the original Takamatsu-no-miya. The new Prince Takamatsu was a fourth cousin, four times removed of Prince Takehito.