Several other acts were passed by the same cortes, which had a more exclusive bearing on the nobility. They were prohibited from quartering the royal arms on their escutcheons, from being attended by a mace-bearer and a bodyguard, from imitating the regal style of address in their written correspondence, and other insignia of royalty which they had arrogantly assumed. They were forbidden to erect new fortresses, and we have already seen the activity of the queen in procuring the demolition or restitution of the old. They were expressly restrained from duels, an inveterate source of mischief, for engaging in which the parties, both principals and seconds, were subjected to the penalties of treason. Isabella evinced her determination of enforcing this law on the highest offenders, by imprisoning, soon after its enactment, the counts of Luna and Valencia for exchanging a cartel of defiance, until the point at issue should be settled by the regular course of justice. [30]

It is true the haughty nobility of Castile winced more than once at finding themselves so tightly curbed by their new masters. On one occasion, a number of the principal grandees, with the duke of Infantado at their head, addressed a letter of remonstrance to the king and queen, requiring them to abolish the hermandad, as an institution burdensome on the nation, deprecating the slight degree of confidence which their highnesses reposed in their order, and requesting that four of their number might be selected to form a council for the general direction of affairs of state, by whose advice the king and queen should be governed in all matters of importance, as in the time of Henry the Fourth.

History of the Reign of Ferdinand and Isabella V1 — Part 202

Ferdinand and Isabella received this unseasonable remonstrance with great indignation, and returned an answer couched in the haughtiest terms. "The hermandad," they said, "is an institution most salutary to the nation, and is approved by it as such. It is our province to determine who are best entitled to preferment, and to make merit the standard of it. You may follow the court, or retire to your estates, as you think best; but, so long as Heaven permits us to retain the rank with which we have been intrusted, we shall take care not to imitate the example of Henry the Fourth, in becoming a tool in the hands of our nobility." The discontented lords, who had carried so high a hand under the preceding imbecile reign, feeling the weight of an authority which rested on the affections of the people, were so disconcerted by the rebuke, that they made no attempt to rally, but condescended to make their peace separately as they could, by the most ample acknowledgments. [31]

History of the Reign of Ferdinand and Isabella V1 — Part 202