Through political marriage alliances, the Geelvinck family had already played an important role the council of Amsterdam for years on end, but in the first half of the 18th century all but one or two of the city's mayors were related to each other.
[6] Lieve Geelvinck died, aged 67, in Amsterdam, and was buried in the Nieuwe Kerk; the Dam Square was crowded for his funeral, in a manner hardly seen before.
The eldest, Agatha Levina Geelvinck, widow of Dirk Trip, the richest man in Amsterdam, inherited the house at Herengracht 518 (now Museum Geelvinck Hinlopen Huis), including the carriage house with the stable; Anna Elisabeth, widow of Nicolaas Pancras and Jan Lucas Pels, inherited valuable stocks, all her books and three guilders cash.
Nicolaes Geelvinck got a collection of letters of debts, shares, bonds and fields in one of the oldest polders in Holland, named the Zijpe.
During the "pachtersoproer" (= tax collectors uproar) in 1747 Nicolaes Geelvinck quickly fled the city hall, before the mayor's room was occupied by the people and demonstratively reached a ceiling-mop from the window.