Agneta de Graeff van Polsbroek (Amsterdam, 10 November 1603 ibid 3 or 4 March 1656), was a patrician woman from the Dutch Golden Age. She became known as the mother-in-law of Johan de Witt.
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Biography
Agneta was a scion of the De Graeff family and born as the oldest daughter of Jacob Dircksz de Graeff and Aeltje Boelens Loen (1579-1630), herself daughter of the politician Cornelis Andriesz Boelens Loen (1552-1584), great-grandson of Andries Boelens (1455–1519), a famous regent of Amsterdam. In 1625 she was married to later Amsterdam burgomaster Jan Bicker. The couple had five daughters:
Elisabeth Bicker (1630–1660) married Jacobus Trip, a wealthy arms dealer
Geertruida Bicker (1634–1702) married Jean Deutz, a rich Banker and Investor of Amsterdam
Wendela Bicker (1635–1668) married Johan de Witt
Cornelia Bicker (1638–1665), married her full cousin Gerard Bicker (I) van Swieten
Jacoba Bicker (1640–1695) married her full cousin Pieter de Graeff
The couple lived at their country houses De Eult at Baarn, Akerendam and Duynwijck in Beverwijk. Between the city of Amsterdam they owned a cityhause at Herengracht and an island, called Bickerseiland. In 1663/64 Agneta was painted by Wallerant Vaillant. Her tomb chapel is located at the Westerkerk.
Coat of arms
Agneta de Graeff van Polsbroek's coat of arms was quartered and showed the following symbols:
field 1 (left above) the silver shovel on a red background of their paternal ancestors, the Herren von Graben
field 2 (right above) it shows a silver falcon on a blue background. The origin of the falcon lies in the possession of the Valckeveen estate (later the Valckenburg estate) in Gooiland
field 3 (left below), same as field 2
field 4 (right below), same as field 1
helmet covers in red and silver
helm adornment shows an upright silver spade with ostrich feathers (Herren von Graben)
motto: MORS SCEPTRA LIGONIBUS AEQUAT (DEATH MAKES SEPTRES AND HOES EQUAL)