The attribution to Allegrini was apparently proposed by Philip Pouncey. The drawing was previously attributed to the Cavaliere d'Arpino on the basis of an old copy of part of the composition traditionally ascribed to Arpino in the British Museum, (J.A. Gere and P. Pouncey, op. cit., London, 1983, no. 381. The present attribution is confirmed by the similarity between Pegasus in this drawing and the horse in Saint George and the Dragon in the British Museum, J.A. Gere and P. Pouncey, op. cit., no. 15, pl. 16. The types and the handling of a youth with a rearing horse are comparable with studies in the large group of Allegrini drawings at Edinburgh, K. Andrews, National Gallery of Scotland Catalogue of Italian Drawings, Cambridge, 1968, II, figs. 68 and 77