[A child's memory.].

Objectives: It is exceptional that the data of a disease are taken from a historical account in which the author, King Alfonso X the Wise himself, in one of the songs (Cantigas) to Mary, the Virgin (monument of universal literature), recites the facts from his childhood in the city of Cuenca, in the middle of August of 1226. These Facts had a great resonance.

Methods: The medical studies were in full decay that did not improve until the creation of the Universities (Paris, Naples, Padua, Bologna and Montpellier). In this Cantiga some good physicals, doctors, are mentioned. There does Peter of Montpellier come from, the Court miniadoctor for King Fernando III that took care of his wife Beatriz of Swabia (daughter of Felipe, Roman King, and Irene Angelo). She was baptized like Isabel but adopted the name in memory of her older sister, empress of the Holy Roman Empire that died in 1212 in a battle.

Results: Beatriz, with a very advanced pregnancy, "had such a great fever" and dismay due to a probable urinary cause: "but Pero de Monpisler and other good physicals, they said: -she will not live". Her husband, Fernando III, had marched twelve weeks before, in campaign, to the lands of his ally the King of Baeza. Their children Fadrique and Alfonso, the elder one, were with Queen Beatriz. Condemned by doctors, the patient implored her healing to a miraculous image of Mary, the Virgin, which devotees brought over her in the days when the Assumption festivity was coming. The healing became effective and coincided with the return of Fernando III after the capture of the fortified town of Capela.

Conclusions: Alfonso, in thanksgiving for the healing of his mother, Queen Beatriz, would dedicate this Cantiga to Mary, the Virgin.