3. William Schaw, master of works and general warden

 “Major building projects, in Scotland as elsewhere, were usually under the control of master of works, who was in charge of administrative and financial affairs, while the technical supervion and organisation was in the hand of master mason. The separation of functions was not a rigid one, however, for master of works were often men with particular expertise and interest in architecture and sometime took an active part in designing buildings.”

 History of freemasonry, David Stevenson