Who was the older brother of person whose guard formed the French Royal Guard?
Louis Bonaparte Louis Napoléon Bonaparte (born Luigi Buonaparte; 2 September 1778 – 25 July 1846) was a younger brother of Napoleon I, Emperor of the French. He was a monarch in his own right from 1806 to 1810, ruling over the Kingdom of Holland (a French client state roughly corresponding to the current Netherlands). In that capacity he was known as Louis I (Dutch: Lodewijk I; ] ).
Louis de Beaufort Louis de Beaufort (6 October 1703 – 11 August 1795) was a French historian of whose life little is known. His brother was Daniel Cornelius de Beaufort (1700-1788).