Schimmelpenninck was born into a bastard branch of the noble family
Schimmelpenninck van der Oye in
Deventer,
Overijssel on 31 October 1761. His father, Gerrit Schimmelpenninck, was a wine trader who had no rights in the
Dutch Republic because of his commitment to the
Mennonite Church. Schimmelpenninck attended
Athenaeum Illustre of Deventer, and started studying Roman and Contemporary Law at
Leiden University in 1781. He received his doctorate in 1784 with his essay
De imperio populari rite temporato, in which he defended
Rousseau's doctrine of
popular sovereignty, although this is limited to the wealthy bourgeoisie. He also spoke positively of the
Constitution of the United States with its dominating president in this thesis. The wealthy bourgeoisie, to which Schimmelpenninck belonged, was devoid of any power, particularly in the east of the Netherlands. This frustrated him and others who enjoyed a good education but weren't assigned influential positions in government because of their background and religion, since these were reserved to scions from the nobility and patricians, and limited to followers of the
Reformed Church in the eastern provinces. He was one of the first
Patriots as a student in Leiden. As the leader of an
exercitiegenootschap, he suppressed an insurrection of
Orangist students in June 1784. In October 1785 he was appointed by a congress of representatives of Holland
exercitiegenootschappen in a commission, together with
Wybo Fijnje and
Pieter Vreede, to write the Patriot manifesto, known as the
Leiden Draft. After receiving his doctorate, on 11 December 1784, Schimmelpenninck left for
Amsterdam to become a lawyer. In 1788, he married Catharina Nahuys, a scion of a wealthy family who provided him with a lot of money and the necessary connections in the capital. Together with these connections, he established the Patriotic
Vaderlandsche Sociëteit. The society was short-lived; it was disbanded in 1787 due to
Prussian intervention. The Prussians restored the power of the stadtholder,
William V, and his Prussian consort
Wilhelmina. The Patriots were thwarted since, and a portion fled to France. Schimmelpenninck and his friends decided to establish a "scientific" society, the
Kunst- en letterlievend Genootschap Doctrina et Amicitia, which included several other prominent Patriots, including
Cornelis Rudolphus Theodorus Krayenhoff,
Alexander Gogel,
Samuel Iperusz. Wiselius and
Nicolaas van Staphorst. In 1792, Schimmelpenninck, together with the Van Staphorst brothers, participated in the
Holland Land Company, a company investing in northern
New York. ==Early career==