Margaretha Levina Geelvinck Lady of Velsen and the Sandpoort (16 Jan 1750 Amsterdam - 22 Mar 1818 Amsterdam) (1750–1818) Parents Maria Margaretha Corver Nicolaes Geelvinck Children Jacob Pompejus Hoeufft Siblings Gerrit Corver Hooft Agatha Theodora Geelvinck Nicolaas Geelvinck Joan Geelvinck