William V became governor of the Netherlands in 1751 after the death of his father when he was only 3 years old. Under the tutelage of his mother and later under Ludwig Ernst of Brunswick, he married Wilhelmine of Prussia.
What was fatal was that even when he came of age in 1766, he left the management of state affairs to the Duke of Brunswick, which caused great opposition from the patriot movement.
The uprising of the Dutch Patriot Party in 1781 split Holland into two political factions. The "Orangists supported the Prince of Orange as governor of the Netherlands, while supporters of the opposition "Dutch Patriot Party" were referred to as Keezen" or "Kezen".
Cornelis "Kees" de Gijselaar (February 9, 1751 - May 29, 1815) was a Dutch politician and patriot, and leader of the rebellion during the Dutch Republic against the House of Orange. At his side was always a small to medium-sized dog: "Kees' Hond".
The political message of the engraving on the chalice depicts the dog of the Keezen or "Kezen" raising its leg in contempt for the "Orangists", represented by the orange tree.
The Patriots' allegiance mark was the "Keeshond" in the form of a silver-plated pin. The counterpart of this grouping was "The House of Orange", with an orange (tan) pug.
The Patriots and the Orangists openly mock each other in pamphlets and pamphlets. For example, Willem V and his wife Wilhelmine of Prussia, along with their children, were portrayed as pigs trampling and tearing up the rights of the Dutch people.
The prince consort and his followers - referred to as "Prinsgezinden" - were referred to and portrayed as "chicks" and "fools" by the insurgents.
Wilhelm V gave his wife Wilhelmine a lot of freedom, who got Prussian help from her brother in 1787 and finally broke the uprisings of the patriots for good.
Wilhelm himself was driven out by the French in 1795 and fled to England.
Sources:
https://historischschouwspel.nl
https://www.rijksmuseum.nl
https://historischschouwspel.nlhttps://onh.nl
https://de.wikipedia.org