(Chapter 19) Footnote 39:

Ioannes Centurio is substituted for Francesco Pinelli in the 1555 edition. Centurio appears in the first edition as the Genoese youth with double joints in his fingers (I ch. 27, p. 124, 1543 edition, see p. xxx below and n. 43). O’Malley 1964 p. 278 implies wrongly that Centurio disappeared entirely from the second edition, “probably the result of the young man’s early death.”