Traditionally attributed to Nicolò dell´Abate (c. 1512-1571). In the elegantly classical arrangement of the composition, the drawing shows knowledge of the work of Giuseppe Porta, called Salviati (c. 1520-c.1575), but the handling seems nearer to that of Bernardino India, or a close associate. The figures in the background sport curls of hair that are exactly similar to India´s trademark quiff.

Turner, Nicholas, From Michelangelo to Annibale Carracci. A century of Italian drawings from the Prado, Chicago, Art Services International, 2008, p.305