Louis, Count of Armagnac has a descendant that includes Umberto II the youngest king of Italy.
 His descendants include Albert II, Prince of Monaco, Umberto II of Italy, and Diana lvares Pereira de Melo, 11th Duchess of Cadaval. 
Umberto II (Italian: "Umberto Nicola Tommaso Giovanni Maria di Savoia" ; 15 September 190418 March 1983), was the last King of Italy. 
