The adjoining chapel, as we proceed towards the northernmost nave, that of Santiago, or more generally called after its founder, Don Alvaro de Luna, is still finer. It is larger and loftier, and of a more ornamental design. It presents five sides of an octagon: the three remaining sides turning inwards to suit the form of the apse. This Alvaro de Luna, the Lord Essex of Juan the Second, having by the high favour he enjoyed in the intimacy of the monarch, given umbrage to the courtiers, was put to death by the King, who gave credit to the charges falsely brought against him. Don Juan, however, who did not long survive his friend, had justice done to his remains. Being found innocent by a posthumous trial at Valladolid, his body was conveyed with great pomp to Toledo, and placed in the centre of his chapel. The tomb of his Countess stands close to his own; and in the niches of the surrounding walls, those of his most distinguished relatives, one of whom, on the right of the altar, is represented in complete armour, with a turban on his head. The treasures bestowed on this favourite, flowed plentifully into the Cathedral of Toledo. Besides his chapel, the finest of all--the elaborately executed enclosure of the sanctuary, is one of his gifts: his arms are there recognised, frequently recurring among the various designs of the external tracery. A narrow passage, leading from the apse between the chapel of Don Alvaro, and the entrance to the sacristy, communicates with the chapel of the kings. After passing through a simply designed anteroom of more recent date, the eye reposes with pleasure on a small interior in the pointed style of the latest period--of proportions, perhaps, not the less graceful from their being rather narrow for the length. Two richly ornamented arches, stretching across the interior, divide it into three parts, in the first of which is seen a gallery containing an elaborately wrought gilded confessional. The walls of the two other divisions are divided into six parts; the chapel having been constructed and endowed by Juan the First, for the reception of six monuments: those of himself and his Queen Isabella; those of his father Henry the Second, (natural son of Alonzo the Eleventh, and who dethroned and killed with his own hand his half-brother, Pedro the cruel,) and Doña Juana his wife; and those of Henry the Third, and Doña Catalina his wife.