Gerontology Wiki
Anonymous of Chiba
Birth: 12 January 1904
Death: July 2017
Kashiwa, Chiba, Japan
Age: 113 years, 170-200 days
Country: JapanJPN

Anonymous of Chiba (12 January 1904 – July 2017) was a Japanese supercentenarian whose age is validated by Gerontology Research Group (GRG). It's possible her name was Sato Nagaoka (Japanese: 長岡さと).


Following the death of Ryo Fujihira in February 2013, she became the oldest living person in Chiba Prefecture. Her age was verified by Japan’s MHLW and Tzen Wei Tseng, and validated by the GRG on 27 August 2015. She lived in Kashiwa, Chiba Prefecture.

The anonymous woman of Kashiwa died in July 2017, at the age of 113 years, 170-200 days. She is currently the oldest validated person ever from Chiba Prefecture.