captain Johannes of Porvoonvirta, 'Jon Borgström' 1686 - 23 Oct 1753 Tammela (1686–1753) Parents Jyrki, burgher in Porvoo Anne Tapanintytär Children Venla Regiina of Porvoonvirta, Lady of Saari Siblings burgher Henrikki 'Borgström', town councillor of Porvoo