Lord Conrad says that the Dutch letter that Abdulhamid has in his possession would show that all of European royalty had no royal lineage because they came from Bonoparte. English, and by extension, British royalty dates back to at least 1066 with William the Conqueror, the Prussian, later German royalty went back to the middle ages, the Russian royalty went back to at least 1613 with the Romanov dynasty, Danish and Austro-Hungarian royalty also went back to the Rennaissance or earlier. Abdulhamid would have known that. Only the French and Spanish royal lines would have had to worry about Bonoparte, but by the time the series takes place, France was no longer a monarchy.