Shigechiyo Izumi was a Japanese supercentenarian, one of the longest-living people. Initially, his case was verified by the Guinness World Records, who awarded him the title of the oldest man of all time. However, they later withdrew the verification due to a controversy over his birthdate, with one source claiming it was 1865 and another saying it was 1880, meaning he would have been 105 instead of 120.