The upcoming autumn Radziwiłł spent in Saxony, however, in December he travelled to the Netherlands.
The money sent from the Crown of the Kingdom of Poland, mainly from his private estates in eastern Galicia and the Kresy region, were not enough to pay the large debts.
Furthermore, the expenses rapidly increased after Hieronim's wedding to Princess Sophie Friederike of Thurn and Taxis, the daughter of Karl Anselm, 4th Prince of Thurn and Taxis and his wife Duchess Auguste of Württemberg.
On February 17, 1776, in Moosburg an der Isar, Radziwiłł signed a manifesto protesting against the improper care of Hieronim by Mikołaj Radziwiłł and proclaimed that he shall now be in charge of his higher education that could affect politics and diplomacy of the future heir to the family fortune, and therefore on the destiny of the Radziwiłł clan as well.

Encouraged by several magnates, Karol was determined to settle the issues surrounding the confiscated properties by the Polish Crown and wished to regain them from Stanisław II Augustus.
At one point he dared to bribe treasurer Antoni Tyzenhauz and threatened to organize anti-royalist party in the Grand Duchy of Lithuania, which hopefully would attract many former supporters and customers.
Radziwiłł also gave him a loan of 2,000 ducats.
With offers of assistance and cooperation he also addressed the emerging leaders of the opposition like Adam Kazimierz Czartoryski (former opponent), Michał Kazimierz Ogiński, Franciszek Ksawery Branicki, Seweryn Rzewuski and Szymon Juda Marcin Korwin-Kossakowski, who all shared an interest in dethroning the king.
Radziwiłł and the majority of his advisers hesitated to decide what steps to take and whom to trust among the nobility.
On February 18, 1776, he sent letters (from abroad) to the voivodes of the provinces and districts in which he highlighted his sacrifices to improve the political situation of the Commonwealth, begged for the return on assets of the Radziwiłł family and asked to be paid 14 million Polish zlotys as re compensation.
He repeated these calls on a larger scale, trying to embrace the Crown and, in the summer of 1776, the members of parliament and smaller sejmiks.
Although his sacrifice and patriotism was deeply acknowledged by politicians and officials, the parliament failed to pass a constitution that ensured his safe return to the country, possibly due to his vivid involvement in the Bar Confederation.
The upcoming autumn Radziwiłł spent in Saxony, however, in December he travelled to the Netherlands. The money sent from the Crown of the Kingdom of Poland, mainly from his private estates in eastern Galicia and the Kresy region, were not enough to pay the large debts. Furthermore, the expenses rapidly increased after Hieronim's wedding to Princess Sophie Friederike of Thurn and Taxis, the daughter of Karl Anselm, 4th Prince of Thurn and Taxis and his wife Duchess Auguste of Württemberg. On February 17, 1776, in Moosburg an der Isar, Radziwiłł signed a manifesto protesting against the improper care of Hieronim by Mikołaj Radziwiłł and proclaimed that he shall now be in charge of his higher education that could affect politics and diplomacy of the future heir to the family fortune, and therefore on the destiny of the Radziwiłł clan as well.
Encouraged by several magnates, Karol was determined to settle the issues surrounding the confiscated properties by the Polish Crown and wished to regain them from Stanisław II Augustus. At one point he dared to bribe treasurer Antoni Tyzenhauz and threatened to organize anti-royalist party in the Grand Duchy of Lithuania, which hopefully would attract many former supporters and customers. Radziwiłł also gave him a loan of 2,000 ducats. With offers of assistance and cooperation he also addressed the emerging leaders of the opposition like Adam Kazimierz Czartoryski (former opponent), Michał Kazimierz Ogiński, Franciszek Ksawery Branicki, Seweryn Rzewuski and Szymon Juda Marcin Korwin-Kossakowski, who all shared an interest in dethroning the king. Radziwiłł and the majority of his advisers hesitated to decide what steps to take and whom to trust among the nobility. On February 18, 1776, he sent letters (from abroad) to the voivodes of the provinces and districts in which he highlighted his sacrifices to improve the political situation of the Commonwealth, begged for the return on assets of the Radziwiłł family and asked to be paid 14 million Polish zlotys as re compensation. He repeated these calls on a larger scale, trying to embrace the Crown and, in the summer of 1776, the members of parliament and smaller sejmiks. Although his sacrifice and patriotism was deeply acknowledged by politicians and officials, the parliament failed to pass a constitution that ensured his safe return to the country, possibly due to his vivid involvement in the Bar Confederation.
Karol Stanisław Radziwiłł (1734–1790)