How many children have Jeanne louise calment have?

Jeanne Louise Calment had one daughter, Yvonne, was born in 1898 and produced a grandson, Frédéric, born in 1926.

Calment outlived Yvonne, who died at age 36 in 1934 from pneumonia. Frédéric became a doctor, and she outlived him as well, as he died in 1963 in a motorcycle accident, also at the age of 36.