What was the name of the architect who designed the building whose grounds Hancock Manor would now stand on?
Hancock Manor:  It stood near the southwest corner of what are today the grounds of the Massachusetts State House. Massachusetts State House:  The building, designed by noted architect Charles Bulfinch, was completed in January 1798 at a cost of $133,333 (more than five times the budget), and has repeatedly been enlarged since.
Charles Bulfinch