Leandra Becerra Lumbreras
Ulises Ruiz Basurto/Landov
09/01/2014 AT 02:15 PM EDT
Leandra Becerra Lumbreras has lived through every major historical event of the past century.
On Sunday, her family says she made history herself.
Born Aug. 31, 1887, the Mexican great-great-grandmother reportedly turned 127. But because she lost her birth certificate, the Guinness Book of World Records
will not recognize her as the world's oldest living person, the Telegraph
The former seamstress has outlived her five children, and her family tree extends as far as 55 great-great-grandchildren.
In an interview with Mexico's El Horizonte
, she credits a love of chocolate and sleep with keeping her well.
Not that Lumbreras left life pass her by: She says she served in the 1910 Mexican Revolution as the leader of Las Adelitas, a group of women in combat, according to the International Business Times
"She is entirely lucid. She blows your mind with stories from the revolution," Lumbreras's granddaughter told El Horizonte
. "She was always a woman who fought."