Following the death of his first wife Barbara , Kepler had considered 11 different matches over two years ( a decision process formalized later as the marriage problem ) .
On October 30 , 1613 , Kepler married the 24 - year - old Susanna Reuttinger .
Following the death of Kepler 's first wife Barbara Kepler Kepler had considered 11 different matches over two years ( a decision process formalized later as the marriage problem ) .
On October 30 , 1613 , Kepler married the 24 - year - old Susanna Reuttinger .