In the 1870s the rival Legitimist and Orléanist claimants agreed for the sake of restoration of the monarchy in France to end their rivalry. Philippe d'Orléans, Count of Paris and grandson of Louis Philippe I accepted the prior claim to the throne of Chambord, who remained childless, in turn acknowledged that Philippe would claim the right to succeed him as heir and after his death many Legitimists accepted the descendants of Philippe as the rightful pretenders and became known as Unionists.