Fact or Fiction? Count Louis Douglas, the Swedish statesman and his twin brother Count Willie Douglas

[William Douglas]

The following is an extract from the book 'The Secret Memoirs of the Courts of Europe' published on-line at fictionbooks.com. How much of it is true?

With regard to Count Douglas, I may state that the kaiser's intimacy with him dates back to many years prior to his accession to the throne. Like his twin brother, Count Louis Douglas, the Swedish statesman, who until a few weeks ago occupied the post of minister of foreign affairs at Stockholm, Count Willie Douglas may be said to have royal blood in his veins, for his father, old Count Douglas, now dead, married the morganatic daughter of a royal princess of the reigning house of Baden. On the old count's death, William, the elder of the twins, inherited his mother's vast property, while Louis, the younger, took possession of his father's estates in Sweden.
William was educated in Germany, is an officer of the Prussian army, as well as a member of the Prussian House of Lords: Louis was brought up in Sweden, entered the Swedish army, became chamberlain to the Crown Prince of Sweden, married the daughter of Count Ehrensward, late minister of foreign affairs at Stockholm, and eventually succeeded to his father-in-law's post at the head of Sweden's foreign office. Like his twin brother in Prussia, he is exceedingly conservative, imbued with the necessity of retaining the old feudal prerogatives, and of placing every obstacle in the way of the rising tide of democracy. Indeed, whatever influence he exercises over the King and Crown Prince of Sweden, is as reactionary as any influence which his German brother may be said to enjoy over the kaiser.
the Douglas twins are descended from the great Scotch family of Douglas, and are therefore allied to the Duke of Hamilton and the Marquis of Queensberry. their ancestors emigrated to Prussia from Scotland at the time of the Thirty Years' War, fought under Gustavus-Adolphus, and afterwards returned with him to Sweden, where they became members of the Swedish nobility. Count Willie, like his brother, displays all the hereditary traits of the Scotch house that bears his name, having the peculiar jaw, falling underlip, and dark complexion of the celebrated "Black Douglas." Yet neither of the twins speaks a word of English, nor has ever visited the land of his sire, though they bear the Douglas motto of "Do or Die." Count Willie has few British sympathies, but some British tastes, being famous as a four-in-hand whip, and as a magnificent shot. He is also very hospitable, and entertains at Berlin in a right royal fashion, his wealth, derived from the mines which he owns in the Hartz Mountains, enabling him to do so without hesitation on the score of expense.
It is no secret that Emperor William has, on two or three occasions, offered a cabinet office to his friend William Douglas, who has, however, invariably declined it, much to the relief of those who are convinced that the same peculiar moral and psychological affinity exists between the Douglas twins as that attributed to the Corsican brothers. It would have been, they declare, a dangerous experiment to have had one of them directing the foreign policy of Germany, and the other that of the kingdoms of Sweden and Norway.
It may interest my American readers to add that a few years ago Count Willie Douglas was the defendant in an extraordinary lawsuit at Berlin which had an American end to it. It seems that some thirty years ago a man of the name of Brandt died in the United States, leaving a fortune of several millions of dollars. Having no near relatives in America, the lawyers advertised for any heirs that he might have left behind him in Germany. the father of Count Douglas was at the time burgomaster of the little town of Aschersleben, and one day some of the inhabitants of the place bearing the name of Brandt placed a lot of papers in his hands, asking him to glance over them, and to see whether there was any truth in the statement that they were heirs to an immense fortune in America. the old count, in his capacity of burgomaster, declared that the affair looked to him very questionable, that he believed it was a mere swindle, and that there was surely nothing in it for them. Whether he returned to them the papers or not, is unknown, but he declared to the day of his death that he had restored them, whereas the Brandts of Aschersleben swear that he did not. Eventually, they brought suit against his son, not merely for the recovery of the documents, but likewise for the fortune, actually alleging that the latter had been appropriated by old Count Douglas, with the connivance of the late Prince Bismarck, who had received a large share of the plunder. It is scarcely necessary to state that they were non-suited.