Maria Rosa Conti was born at the Palmeiras site in Uchoa, São Paulo, Brazil, on 3 July 1915. Her parents were José Bento do Carmo and Virgínia Rosa da Conceição. She had six siblings that survived infancy: Benedicta, Sebastiana, Antonio, João, Anna, and Joaquim.
On 11 April 1940, she married Atilio Conti. The couple had four daughters: Evalina, Célia, Maridalva, and Vera. She was widowed in 2007. Maria has always loved music. She still listens to it every day. At the age of 109, she has nine grandchildren, 13 great-grandchildren, and six great-great-grandchildren.
Maria attributed her longevity to a lifetime of hard work—on the farm, as a housewife, a nanny, and more. When asked about the secret to her long life, she said it was listening to music. She also credited eating well and getting plenty of rest.
Her age was verified by Gabriel Ainsworth, Iara Souza, and Filipe Lopes, and validated by LongeviQuest on 6 January 2025.