Note 638 — Chapter XIX

This important letter—which, from the notice of it by Argote de Molina, (Nobleza, 1588, f. 335,) was a sort of acknowledged introduction to the Cancionero of the Marquis—is found, with learned notes to it, in the first volume of Sanchez. The Constable of Portugal, to whom it was addressed, died in 1466.