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 I, Count of Montpensier Louis de Bourbon (1405 – May 1486) was the third son of John I, Duke of Bourbon and Marie, Duchess of Auvergne. He was Count of Montpensier, Clermont-en-Auvergne and Sancerre and Dauphin of Auvergne and was a younger brother of Charles I of Bourbon. He founded the Bourbon-Montpensier branch of the House of Bourbon, who would eventually take over the Duchy in 1505.