(Don) is intended for the Duke of Lerma. (Rawdon Brown.)
Don Quixote. The romance so called is a merciless satire by Cervantes on the chivalric romances of the Middle Ages, and had the excellent effect of putting an end to knight-errantry.
Don Quixote's horse. Rosinante (Spanish, rocin-ante, a jade previously). (See Horse.) The wooden-pin wing-horse on which he and Sancho Panza mounted to achieve the liberation of Dolorida and her companions was called Algiero Clavileno (wooden-pin wing-bearer).
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894