Prince Heinrich XIII Reuss, descendant of a noble family with a history dating back over eight centuries, was supposed to be installed as Germany's new leader if the bizarre plan had succeeded, officials say.But he was arrested, along with other alleged plotters including a right-wing ex-MP and former soldiers, in a massive nationwide operation by thousands of German security forces Wednesday.The 71-year-old had made little attempt to hide his extreme views, which chimed with the "Reichsbuerger" movement's belief in the continued existence of the pre-World War I German Reich, or empire, under a monarchy.The head of the house, who is based in Austria, said he was "very shocked" to hear of his relative's alleged involvement in the plan to overthrow the government.Those arrested included "a dangerous mix of people with irrational convictions, some with a lot of money and others in possession of weapons", he told the ARD broadcaster."