Takako Shimazu (島津貴子 , Shimazu Takako , born 2 March 1939) , born Takako, Princess Suga (清宮貴子内親王 , Suga-no-miya Takako Naishinnō ) , is a member of the Imperial House of Japan.
 She is the fifth and youngest daughter of Emperor Shōwa and Empress Kōjun, and the youngest sister of the current Emperor of Japan, Akihito.
 She married Hisanaga Shimazu on 3 March 1960.
 As a result, she gave up her imperial title and left the Japanese Imperial Family, as required by law.
Prince Nashimoto Morimasa (梨本宮守正王 , Nashimoto no miya Morimasa ō , 9 March 1874 – 2 January 1951) was a member of the Japanese Imperial Family and a "Gensui" (Marshal-General) in the Imperial Japanese Army.
 An uncle-in-law of Emperor Shōwa, an uncle of his consort, Empress Kōjun, and the father-in-law of Crown Prince Euimin of Korea, Prince Nashimoto was the only member of the Imperial Family arrested for war crimes during the American occupation of Japan following the Second World War.
Musashi Imperial Graveyard (武蔵陵墓地 , Musashi ryōbochi ) is a mausoleum complex of the Japanese emperors in Nagabusa-machi, Hachiōji, Tokyo, Japan.
 Located within a forest in the western suburbs of Tokyo and named for the ancient Musashi Province, the site contains the mausolea of the Taishō and the Emperor Shōwa, as well as those of their wives, the Empress Teimei and the Empress Kōjun.
Count Higashifushimi Kunihide (東伏見 邦英 , 16 May 1910 – 1 January 2014) was the titular head of the Higashifushimi-no-miya, an extinct branch of the Imperial House of Japan, and a Buddhist monk.
 He was the youngest brother of Empress Kōjun and was the maternal uncle of the present emperor, Akihito.
 If he had kept his imperial status, at the time of his death he would have been the oldest-ever member of the Japanese imperial family.
 His Dharma name was Jigō (慈洽 ) .
Atsuko Ikeda (池田厚子 , Ikeda Atsuko , born 7 March 1931) , formerly Atsuko, Princess Yori (順宮厚子内親王 , Yori-no-miya Atsuko Naishinnō ) , is the widow of Marquis Takamasa Ikeda (池田隆政 , Ikeda Takamasa , 21 October 1926 – 21 July 2012) and fourth daughter of Emperor Shōwa and Empress Kōjun.
 As such, she is the older sister of Emperor Akihito.
 She married Takamasa Ikeda on 10 October 1952.
 As a result, she gave up her imperial title and left the Japanese Imperial Family, as required by law.
Hirohito (裕仁 , April 29, 1901 – January 7, 1989) was the 124th Emperor of Japan according to the traditional order of succession, reigning from December 25, 1926, until his death.
 He was succeeded by his eldest son, Akihito.
 In Japan, he is now referred to primarily by his posthumous name, Emperor Shōwa (昭和天皇 , Shōwa-tennō ) .
 The word "Shōwa" is the name of the era that corresponded with the Emperor's reign, and was made the Emperor's own name upon his death.
 The name Hirohito means "abundant benevolence".
Masahito, Prince Hitachi (常陸宮正仁親王 , Hitachi-no-miya Masahito Shinnō , born 28 November 1935) is a member of the Imperial House of Japan and the younger brother of current Emperor Akihito.
 He is the second son and sixth born child of Emperor Shōwa and Empress Kōjun and is fourth in line to the Chrysanthemum Throne.
 Prince Hitachi is mainly known for philanthropic activities and his research on the causes of cancer.
Empress Kōjun (香淳皇后 , Kōjun-kōgō ) , born Princess Nagako (良子女王 , Nagako Joō , 6 March 1903 – 16 June 2000) , was the wife of Emperor Shōwa of Japan.
 She was the mother of the present emperor, Akihito.
Prince Kaya Tsunenori (賀陽宮恒憲王 , Kaya no miya Tsunenori ō , July 23, 1900 – January 3, 1978) , was the second head of the Kaya-no-miya collateral branch of the Japanese imperial family.
 He was first cousin to Empress Kōjun (Nagako), the wife of Emperor Shōwa (Hirohito).
Sachiko, Princess Hisa (久宮祐子内親王 , Hisa-no-miya Sachiko Naishinnō , 10 September 19278 March 1928) was the second daughter and child of Emperor Shōwa and his wife, Empress Kōjun.

Question: What was Empress Kōjun's spouse's name before his death?
Answer: Hirohito