His paternal grandparents were Aglaé Auguié and Michel Ney, 1st Prince de la Moskowa, 1st Duke of Elchingen, who was made a peer of France in 1814.
[2] In August 1852, he volunteered in the regiment of his uncle, Napoleon Joseph Ney, a few months after the death of his cousin of the same age.
She was the adopted daughter of wealthy Frankfurt banker Charles Heine and heiress Cécile Furtado-Heine who owned the Château de Rocquencourt.
Together, they were the parents of seven children, two sons and five daughters, including:[5] The Duke was found dead at his rented house in Fontenay-aux-Roses on 23 February 1881.
[16] Through his youngest son Charles, he was a grandfather of Michel Georges Napoléon Ney, 6th Prince de la Moskowa, 5th Duc d'Elchingen (1905–1969), upon whose death both titles became extinct.