Dina Guerri Manfredini was an italian-american supercentenarian who lived 115 years and 257 days. She was born on 4th April 1897 in Pievepelago, Emilia Romagna region, Italy and she died on 17th December 2012 in Johnston, Iowa, USA. She was at the time of her death the oldest living person of the world.
Dina Manfredini is the oldest validated woman ever who was born on April 4th.
Efrain Antonio Rios Garcia is the oldest validated man ever who was born on April 4th.
(April 4th is a famous day for literature because this date is used in 1984, George Orwell's famous novel.)
Dina = born in 1897, Efrain = born in 1910
13 years of difference
Oddly enough, Dina Manfredini's reign as the world's oldest living person was same number, 13 days.
Born 3 Feburuary 1999. Founder of 5ch anonymous message board about longevity (1 January 2012) / Founder and chief administrator, the oldest people research forum in Japan founded in 1 January 2017. Link: 長寿者研究フォーラム (oldestpeopleforum.jp)