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; ] ).
Paul Hay du Chastelet Paul Hay du Chastelet (November 1592 – 26 April 1636) was a French magistrate, orator and writer. His brother Daniel Hay du Chastelet de Chambon was a mathematician.