You will recognize him; he will be disguised as a master-mason, with a rule in his hand.
This master-mason took great pride in exact work, with which no trifling was permitted.
As for the master-mason he was well paid, and gave his word to fly the land, but he didn't, for he stayed where he was.
Whenever Tintoretto came across a 115 fine fair wall he prevailed upon the master-mason to allow him to paint it.
A week later (28 April) William Pontis, master-mason, was asked to prepare a design for a staircase up to the library.