Source notes:Campbell

From Pittsburgh Streets


However in 1774 John Campbell came along with a better plan. He shows six streets besides Water street and Chancery lane intermediate to Ferry and Market.

At Market and Water the northwest corner lot is marked "P. Neville." Gen. Neville did not come to this property until after the whisky insurrection of 1794. It is evident the names on this plan were not given by Col. Campbell Chancery lane and Market street, suggesting a court house and a market, which did not come for years afterward.