Charles V, Holy Roman Emperor, but also King of Spain, imported the etiquette styled in the Court of his paternal grandmother Mary of Burgundy.
During the 17th and 18th centuries, the ceremonial laws regulating the Royal service confirmed the principal prerogatives that the traditional Burgundian etiquette granted to the “Sumiller de Corps”, in the measure in which they supposed a great intimacy and a physical daily contact with the Monarch.
Those of the Royal Chamber of 1659 established that the organization of the closest service to the King corresponded to the “Sumiller de Corps” and, in this way, he might sleep in a bed in the same room of the Sovereign.
The sole exception to this rule was between 1925 and 1927 when the second one was exercised by the duke of Miranda and the first one by the Marquess of Viana, Caballerizo mayor, who in addition, had the privy seal of the King.
All this classes of royal servants were chosen between gentlemen, mostly from the nobility, and in the latter times of the reign of Alfonso XIII from people with prestigious professional background as famous officers of the Army, well-known physicians or businessmen, etc.