George_Keith,_10th_Earl_Marischal--King_of_Prussia_Frederick_II

George Keith, 10th Earl Marischal (1692 or 1693 – 1778) was a Scottish Jacobite army officer and diplomat, who led Jacobite forces in the rising of 1719. He later joined in the Prussian Army and became a close confidant of Frederick the Great, serving as his ambassador to both France and Great Britain. He was the tenth and last Earl Marischal.