The succession to the grand magistry of this order has been disputed among as many as three branches of Bourbons since 1960. The dispute is rooted in different interpretations of the so-called "Act of Cannes" of 14 December 1900 in which the count of Caserta's second son, Prince Carlo (grandfather of Infante Carlos, Duke of Calabria), promised that he would renounce his succession to the crown of the Two Sicilies in execution of the "Pragmatic Decree" of 1759. This decree required that if the king of Spain, or his immediate heir, should inherit the Two Sicilies crown, he would renounce the latter to the next in line. Whether the "Pragmatic Decree" applied to Prince Carlo's situation in 1900, and whether the grand magistry of the order was included in such a renunciation, are both issues in dispute.