Armand Peugeot and Robert’s father, Eugène Peugeot, were both great grand-sons of Jean-Pierre Peugeot jr (1768 - 1852), who himself was the son of the similarly named company founder Jean-Pierre Peugeot sr 1734 - 1814. Therefore Robert Peugeot and Armand Peugeot were second cousins once removed to one another.