God yes, those marriage negotiations are a headache to keep straight. (Err, no pun intended.) BTW, I seem to recall Katte also had some family connections in Britain? Mind you, I doubt either the British royals or the nobility would have been pleased to see them actually on the Island, because exiles are rarely welcome, especially when coming without money. Though it is interesting to contemplate what would have happened to European history if, say, Friedrich Wilhelm after a successful escape from Fritz & Katte would have disinherited his oldest son in favour of one of the younger ones. I mean, would Prussia even have become the dominating German state? Friedrich Wilhelm had militarized the country and created its army, and Heinrich was also a good general, but I don't think he had Friedrich's ambition (or stomach for leading a war with several nations at once). And without Prussia as the dominating German state and new European power, who knows what would have become of German history. (Hasten to add this is not meant to blame Friedrich II for the Nazis! But, say, the 1848 Revolution and first attempt at a German constitution might have worked out differently with Prussia as just one of several leading German states, and with half a century of parliamentary monarchy before the 20th century showing up, the unified Germany might have been quite different from the authority-obeying empire it became. And God knows one one would miss Wilhelm II.)