Sachiko, Princess Hisa (久宮祐子内親王, Hisa-no-miya Sachiko naishinnō, 10 September 1927 – 8 March 1928) was the second daughter and child of Emperor Hirohito and his Empress consort, Empress Kōjun.
Birth
On 10 September 1927, the Emperor and Empress's second child was born, a daughter who weighed 3300g and had a height of 51 cm.
The princess was named Sachiko on 16 September, a name chosen by the Emperor himself. The princess grew steadily and was breastfed. By February 27, the princess developed an eczema and a high fever and was diagnosed with catarrh. On 1 March, the doctor announced that no one should worry and, on 3 March, it was announced she was expected to recover.
Death
However, on 4 March, the princess developed a very high fever, 39°C and, by 9 pm, she was suspected of sepsis. Birthday events for the Empress were canceled on 6 March.
On 8 March, things got even worse and the tiny princess died at 3:38 am. The Emperor ordered the army to stop their actions for the day and decreed a day of national mourning. On 13 March, the princess was buried in a simple ceremony in the Toyoshima cemetery. The Empress was crushed, she held a doll of about the same size as Sachiko for days and would not have another child for one more year.
Titles and styles
10 September 1927 - 8 March 1928: Her Imperial Highness The Princess Hisa
Sachiko's patriline is the line from which he is descended father to son.
Patrilineal descent is the principle behind membership in royal houses, as it can be traced back through the generations, which means that Sachiko is a member of the Imperial House of Japan.