(Chapter 8) Footnote 14:

Wolfgang Peter Herwart (1514-1585), a native of Augsburg, probably became Vesalius’ friend while they were students at Padua. A brief biography is given in C.D. O’Malley, op. cit. p. 435f. n.143. O’Malley speculates that he is the large man standing to the left of the dissecting table, his right hand on his hip, on the title page of the Fabrica.