 Petronella Elizabeth van Nierop, daughter of Arend van Nierop and Anna Elisabeth Maas.Born 31 Dec 1896 Delft, died 17 Mar 1975 Delft, 78 years Married 06 Jul 1921 Delft (42 years married) to:  Gerardus Thomas Petrus Dijkgraaf, son of Gerardus Thomas Dijkgraaf and Adriana Catharina Maria Kuipers.Born 03 Jan 1898 Delft, died 12 Sep 1963 Delft, 65 years. Occupation: kraanmachinist Child: 1. Adriana Catharina Maria "Adriana" DijkgraafBorn 06 Jan 1923 Delft, died 21 Jan 2003 Milford, New Haven County, Connecticut (Milford Health care Center), 80 years | |||