At 119 years old Johanna Mazibuko, who lives in small town south-west of Johannesburg, could be the world's oldest person.
Ms Mazibuko was born in 1894, according to her identity papers, and has outlived five of her seven children.
"God gave my life in abundance, plus a bonus. I am very old now," she told South Africa's Sowetan newspaper.
According to Guinness World Records, the oldest living person is Misao Okawa, from Japan, who is 115.