Hendrik Daniëlsz Hooft, the father of Joan's brother-in-law, was the leader of the Amsterdam Patriots in the vroedschap.
[citation needed] After graduating in law from Leiden University, Geelvinck was appointed to the city council of Amsterdam in 1759.
[2] Parts of the interior, including the wallpapers created by the Haarlem painter Jan Augustini can be seen in the De Bazel building, in the City Archives.
[3] On 16 November 1783, Geelvinck held discussions with FS Grave van Byland, who had proposed a one-man administration of Amsterdam.
Geelvinck resided in Brussels for some time and lived with Jan Bernd Bicker in a large rented building, which had been vacated by Mattheus Lestevenon.
[6] In 1790, Geelvinck was part of a committee aiming to promote patriot interests and benefits in Paris.
His daughter Johanna Albertina Geelvinck (1762-1815) became dame du Palais to Queen Hortense de Beauharnais in 1806.
Maria Petronella (1769-1831) moved to Bern, when she married the Swiss military man Franz Anton Tschiffely.