It is not known when Kerstin was born buy most likely she was born in Nedre Ulleruds parish, Värmlands county.
On June 10 1700 she was married in Nedre Ullerud to Anders Jonsson. By that time she was living on the farm Jonsbol in Nedre Ulleruds parish. Anders was living on the farm Nolsjö in the same parish.
It is not known when she died.
It is not known if she had any more children.