It was with some reluctance that
Prince Rupert of the Rhine took possession of his new principality of Verden. Conquered from the Swedes by the Emperor, the ministers of Austria had counselled the Emperor to bestow it upon an agreeable Prince to administer it as his direct vassal, the enclave being too distant from his other domains (not to mention too Protestant) to be anything more than a drain on Hapsburg resources. Rupert was not the only candidate considered, but had been chosen on two counts: firstly, as a means of appeasing his disgruntled brother the Palatine, who was very sore at having made no territorial gains of his own, and secondly as a check to growing Danish and Brandenburger influence in the region.
The Emperor was eager to prevent an alliance between Rupert and the aforementioned neighbors: Imperial agents dissuaded the Prince from pursuing a daughter of the Danish monarch or either of the royal foster-sisters (and first cousins) the Swedish were offering in a futile attempt to maintain some modicum of influence over Verden's affairs. At length the fifty year old bachelor set his sights on
Albertine Agnes of Orange-Nassau. The right brand of Protestant she was of proven fertility as a wife and administrative skill as Regent for her son. The King of England and the lady's ambitious mother, the
Dowager Princess Amalia, actively promoted the match, thinking that Rupert's marriage to the aunt of the Prince of Orange would go some way toward healing the wounds of the recent Anglo-Dutch conflict. The Dutch leader De Witt however feared Rupert's potential influence on Dutch politics at the side of the Regent of Friesland and Groningen; Albertine Agnes was forced to make over the Regency to her formidable mother before she could accept Rupert's proposal.
The two were married in London, before the English royal court, in great honour: they proceeded to the continent, where they visited the Emperor and several other German courts. The hoped-for son,
Frederick Charles (Friedrich Carl), followed in due time.
Albertine Agnes of Nassau ~ Princess of Verden, Duchess of Cumberland & Countess of Holderness
Rupert's marriage did not bring about an immediate reconciliation with his elder brother
Charles I Louis, the Elector Palatine, with whom he had quarreled in past times. Rupert held fast to his promise not to step foot in Charles' court: Charles longed for Rupert's childlessness so he might have Verden for himself. Rupert's new influence with the Nassau hampered plans for a marriage between the Elector's daughter with the Prince of Orange: in the aftermath of the Elector's poor showing in the Great War possibilities for her were already significantly injured. The Hohenzollerns were not keen on young
Liselotte for their treasured heir, the Electoral Prince, thinking her too old (she was three years his senior). The Elector of Brandenburg (who was the Palatine's first cousin) was however interested in her as a second wife and negotiations were carried on to that effect. Charles Louis made impossible demands: Hohenzollern aid in regaining the Upper Palatinate from his Bavaria cousins, the succession to the Duchy of Cleves for Liselotte's issue in preference to the three surviving sons from the Elector's first marriage.
When the exasperated Brandenburger married a Holstein girl instead, the Palatine was forced to settle for a betrothal between his daughter and the young heir of his cousin,
Philip William, Duke of Neuburg, Jülich and Berg. Like the Elector Palatine the Duke of Neuburg had sided with the French in the Great War, albeit with greater subtlety, in the hope they would support his candidature for the Polish throne. He had thus lost the support of Vienna, who had previously shown some goodwill to his election as King John Casimir's heir. With the French far preferring one of their own princes for the role, Neuburg found himself duped and ditched. Despite their difference of creed (Neuburg was a Roman Catholic) the two Pfalzer cousins now had good reason to associate.