 Lengthy negotiations ended in 1857 with a letter, written by Nemours, as he subsequently explained, at the dictation of his brother, François, prince de Joinville, in which he insisted that Chambord should express his adherence to the tricolour flag and to the principles of constitutional government.In 1871 the Orléans princes renewed their professions of allegiance to the senior branch of their house, but they were not consulted when the count of Chambord came to Paris in 1873, and their political differences remained until his death in 1883.Nemours lived at Bushy House after the death in 1866 of Queen Marie Amélie, widow of Louis Philippe.