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; ] ).
Xavier de Maistre Xavier de Maistre (] ; 10 October 1763 – 12 June 1852) of Savoy (then part of the Kingdom of Piedmont-Sardinia) lived largely as a military man, but is known as a French writer. The younger brother of noted philosopher and counter-revolutionary Joseph de Maistre, Xavier was born to an aristocratic family at Chambéry in October 1763. He served when young in the army of Piedmont-Sardinia, and in 1790 wrote his fantasy "Voyage autour de ma chambre" ("Voyage Around My Room", published 1794), when he was under arrest in Turin as the consequence of a duel.