However, the marriage did not provide the stability sought after by Jacqueline and her supporters and eventually led to estrangement of the couple in 1420. One of the reasons was his incapability to protect her rights in Holland and Zeeland. His attempts in the first year of their marriage, such as the disastrous Siege of Dordrecht (summer of 1418), were insufficient against the force of Jacqueline's uncle, John III. Another reason why their marriage and John's attempts to defend Jacqueline's rights in Holland and Zeeland did not succeed was that John's closest advisors were all part of the Cod faction, while Jacqueline's supporters were of the Hook faction in the Hook and Cod disputes. This meant an inevitable political struggle. Under influence of his advisors, John appointed Jacqueline's uncle, John III, as regent (Dutch: "ruwaard") of Holland in 1420. This open support of her uncle caused Jacqueline to flee her husband's court and declared their marriage annulled.