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Anna Maria Petronella Rooijers was born 13 January 1887 in Haarlem, North Holland, Netherlands to Albert Lodewijk Rooijers (1860-1923) and Petronella Catharina de Laat (1859-1945) and died 11 October 1970 Haarlem, North Holland, Netherlands of unspecified causes. She married Frederik Hendrik Cramer (1886-1912) 7 December 1911 in Amsterdam, North Holland, Netherlands. She married Pieter van Niel (1889-1964) 16 November 1915 in Haarlem, North Holland, Netherlands.
Children
| Name | Birth | Death | Joined with |
| Frederik Hendrik Cramer (1912-1986) | |||
| Name | Birth | Death | Joined with |
| Ida Wilhelmina Catharina van Niel (1916-2002) | |||
| Petronella Catharina van Niel (1918-2000) | |||
| Anna Maria Petronella van Niel (1919-2019) | |||
| Pieter van Niel (1921-1977) | |||
| Bernardus van Niel (1922-2010) | |||
Residences