What year was the mother of Masako, Crown Princess of Japan born?
Masako, Crown Princess of Japan Masako, Crown Princess of Japan (皇太子徳仁親王妃雅子 , Kōtaishi Naruhito Shinnōhi Masako ) , born Masako Owada (小和田雅子 , "Owada Masako" ) on 9 December 1963, is the wife of Naruhito, Crown Prince of Japan, who is the eldest son of Emperor Akihito and Empress Michiko and the heir apparent to the Chrysanthemum Throne. She is a member of the Imperial House of Japan through marriage. Should the Crown Prince ascend the throne as expected upon his father's abdication, Masako will become empress consort.
Prince Nagahisa Kitashirakawa Prince Nagahisa Kitashirakawa (北白川宮永久王 , Kitashirakawa-no-miya Nagahisa-ō , 19 February 1910 – 4 September 1940) of Japan, was the 4th head of the Kitashirakawa-no-miya collateral branch of the Japanese imperial family and a career officer in the Imperial Japanese Army.