Kathleen Snavely (née Hayes) was a validated Irish-American supercentenarian who holds the record as the oldest validated Irish-born person ever, at the age of 113 years, 140 days.

Katherine Plunket was a validated Irish supercentenarian. She was, at the time of her death, nearly four years older than the next oldest known living person in the world and also was the longest-lived Irish person until Kathleen Snavely (who died in the United States) outlived her age of 111 years, 327 days.