Johanna Margaretha Hasselaer (1728-1798) (1728–1798) Parents Anna Margaretha Pasques de Chavonnes Cornelis Hasselaer Heer van Eemnes en Groeneveld Children Susanna Catharina Hartsinck Jan Hartsinck Pieter Cornelisz. Hartsinck Anna Margaretha Hartsinck Siblings Anna Adriana Hasselaer Maurits Anthony Hasselaer Cornelia Balthasarina Hasselaer Partners Pieter Hartsinck