Peerages
Peerages in Spain are created by the Grace of the King, according to the Spanish Ministry of Justice, and are the highest marks of distinction that he may bestow in his capacity as the fons honorum in Spain. Conventionally, the Title of Concession creating the dignity must be countersigned by a government minister. When a title is created for a former president, the succeeding president customarily countersigns the royal decree. As a reward for national service, the king awarded peerages to two of his former presidents who have since retired from active politics: Adolfo Suárez was created 1st Duke of Suárez; and Leopoldo Calvo-Sotelo was created 1st Marquesado de la Ría de Ribadeo (es). Additional titles of nobility have been created by the king for other government ministers, usually at the advice of the president of the government.
As of 2005, the king has created 40 hereditary titles of nobility.
Read more about this topic: Prime Minister Of Spain