Original: After the deaths of both Napoleon Bonaparte in 1821 , and of his eldest brother Joseph in 1844 , Louis was seen by the Bonapartists as the rightful Emperor of the French , although Louis took little action himself to advance the claim .
Simplified: After the death of his elder brother Joseph in 1844 , Louis was seen by Bonapartists as the rightful Emperor of the French , although he took little action himself to advance the claim .