House of Farnese
Carlos-Hugo claimed the headship of the [[Sacred Military Constantinian Order of Saint George|Constantinian Order of Saint George]] as hereditary heir to the [[House of Farnese]]'s Duchy of Parma, the Farnese dukes having been recognised as [[Grand Master (order)|grand master]]s of the order in 1699, although in 1706 the church of Rome confirmed the order's grand magistry to the Farnese's heirs (the [[House of Bourbon]] since 1731) in accordance with male [[primogeniture]].