Princess Yuriko became the sister-in-law of Japan's World War II-era Emperor Hirohito when she married his brother Prince Mikasa.

Princess Mikasa, the oldest member of Japan's royal family and great aunt to the emperor, died aged 101 on Friday in a Tokyo hospital, the Imperial Household Agency said.

Japanese Princess Yuriko, the wife of wartime Emperor Hirohito’s brother and the oldest member of the imperial family, has died after her health deteriorated recently, palace officials said. She was 101.

Princess Yuriko, the oldest member of the Japanese Imperial Family, passed away on Friday, November 15 at age 101. The cause of her death was old age, the Imperial Household Agency said, with Japanese papers reporting she had been experiencing deteriorating health since last week,