Johanna Maria of Helsingi 2 Oct 1808 Kalliala manor, Hattula, Tavastian Finland - 9 Oct 1878 Viipuri, Karelian isthnus, SE Finland Parents Johanna Kustaava of Floriini commissioner-super. Kaarle Johannes Helsingius Children noble Olka Maaria of Thesleffi Nikolai Alexander Thesleff noble Eugenie Amelie Jenny of Thesleffi Siblings August Vilhelm Helsingius Partners Alexander Amatus Thesleff