Calderon was not the only celebrated poet who made the Purgatory of St. Patrick the subject of his song. Four centuries before the great Spanish dramatist was born, a most elaborate and very lengthy poem was written on the same attractive theme by Marie de France, the first woman, as M. de Roquefort says,who ever wrote French verse, the Sappho of her age.* Nor was Marie herself the only minstrel of that early time who yielded to the fascination of this legend. Two anonymous Trouveres of a little later period were unconsciously her rivals in the attempt. M. l'Abbe de la Rue, in his valuable work on Norman and Anglo-Norman Poetry, thus writes:-- [footnote] *"Poesies de Marie de France", par B. De Roquefort. Paris, 1820. t.i., p.1. "Quoique la celebre Marie eut, au XIIIe siecle, donne une assez ample histoire du Purgatoire de St.-Patrice, puisqu'elle est de plus de trois mille vers, deux autres Trouveres anglo-normands qui probablement ne connaissaient pas son poeme, volurent dans le siecle suivant traiter le meme sujet."** [footnote} **"Essais Historiques sur les Trouveres", etc., par M. L'Abbe de la Rue. Caen, 1834. t. iii., p. 245. These poems, still unedited, are to be found in the Cottonian and Harleian MSS. The reader is also referred to the very interesting and exceedingly rare volume, 'Owain Miles' (Edinburgh, 1837), and 'The Visions of Tundale' (Edinburgh, 1843), in the Prefaces to both of which, by the late lamented W.B.D.D. Turnbull, much curious information on the subject will be found. * * * * * THE AUTHORITIES FOR THE LEGEND, AS GIVEN BY CALDERON. ACT III., SCENE X. (the concluding lines.)