Thank you very much for the great amount of valuable information.
But where do you get the bit about Bernadotte being close to Joseph?
Well, it is “all over the place” and probably can be found in any Bernadotte’s biography. In one that I pointed to, for example. Joseph more than once acted as an intermediary between him and Napoleon. Their wives also had been very close (Desire kept pestering Louis XVIII with the requests to let Julie to return to France). Joseph’s estate at Point Breeze had “two splendid
Etruscan vases of Porphyry 3 ft. high & 2 in diameter presented by the Queen of Sweden”. But he was a close friend not only to Joseph but to the rest of the family (was the best man at Caroline’s wedding, Joseph was a godfather of his son,
Joseph François Oscar Bernadotte, and Napoleon presumably took credit for offering “Oscar” part
) and, Napoleon considered him as such. To quote from wiki:
“while Napoleon embarked on his summer Italian Campaign, where he ultimately prevailed at the
Battle of Marengo, he left Bernadotte not far from Paris with an army. In his farewell note to Bernadotte on his way to Italy, Napoleon wrote: "I am going to fling myself once more into the hazards of war. We do not know how it may turn out. If I fall, you will find yourself with 40,000 men at the gates of Paris. In your hands will be the fate of the Republic." As Bernadotte was brother-in-law to Joseph and close friends with his other brothers and sisters, Napoleon is thought to have been considering the welfare of his family in the possible event of his death on the battlefield, as well as the future of the country, by leaving his erstwhile rival in a position to seize the reins of government as, of his former rivals, only Bernadotte had the political and military skill and popularity to maintain the Republic.”