Hello Norbert. Yes, Montpensier did not renouce his rights to the throne of...Louis Philippe. He carried on bearing the title of duke of Montpensier all his life, till his death in 1890 indeed.You talked about don Fernando, the eldest son of the duke, I suppose? But this prince died before his father on the third of december 1873 in the Little Seminary of La Chapelle Mesmin (Loiret) where he was pupil. He was 14 year old. He is buried in Dreux with the other Orléans.
REMI