industrialist Olof Hermanson 'Kolthoff', master of Forsnes bruk 16 Dec 1672 Karlstad, Värmland - 22 Mar 1740 Forsnäs, Alster, Sweden Parents burgher Herman Henrikson Kolthoff, mayor of Karlstad, industrialist of Edsvalla bruk Birgitta Carlberg Children Anna Elisabeth Kolthov Siblings industrialist Herman Hermanson Kolthoff Henrik Hermansson Kolthoff