Sep. 24, 1880 Hollywood Luzerne County Pennsylvania, USA
Dec. 30, 1999 Allentown Lehigh County Pennsylvania, USA
Considered the world's oldest living person by Guinness World Records from April 16, 1998, the date of the death of 117-year-old Canadian Marie-Louise Meilleur, until her own death. At age 117, she also set the record for the world's oldest "new" title-holder (which corresponds to the highest "valley" on a graph of the oldest living persons over time). Knauss is the second-oldest fully documented person ever, behind Jeanne Calment. She was the last verified living person to have been born before 1885.
Knauss lived her entire life in Pennsylvania. She was born in the small short-lived United States coal-mining town of Hollywood and died in Allentown. In 1901, she married Abraham Lincoln Knauss (December 19, 1878 – March 1, 1965).
At age 116, she was recognized as being the new United States national longevity recordholder, then thought to have been held by Carrie C. White (reportedly 1874–1991). It is now believed that the record should have been held by Lucy Hannah (1875–1993), who died aged 117 years and 248 days in 1993. In any case, Sarah extended the United States longevity record to age 119. Some scientific circles consider her to be the second-oldest person ever, though Guinness recognizes her as third, after Jeanne Calment (1875–1997) and the disputed Shigechiyo Izumi (reportedly 1865–1986) respectively.
More than 10 years after her death, her record as the longest lived person in America has yet to be surpassed.