Ferdinand I of Naples (1423–1494)
was the father of Beatrice of Naples, Queen Consort of Matthias Corvinus. The letter survived only in a contemporary undated copy, so it could have been written at any time between 1476, the date of marriage, and 1490, Matthias's death.

To His Most Serene Sovereign Lord Ferdinand, King by the Grace of God of Sicily etc. etc. and our dear father and father-in-law, we Matthias, by the same Grace King of Hungary, Bohemia, etc. etc., send greetings and wishes for your every prosperity. Your Serenity has sent us a certain horse trainer, together with a letter in which you write that you understood that we were looking for someone with experience and skill in the rearing and management of those horses known as gynectes, and therefore dispatched this person to us out of Your Majesty's wish and desire to supply our need in this matter. To which we reply to Your Majesty that we have never expressed the least desire for such a person, nor have any wish to have him, while freely acknowledging Your Majesty's generous intentions and remaining most obliged that Your Majesty should wish to accommodate our every wish and desire.

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