J Mackay Posted on 30 January 20119 November 2024 by admin James Mackay, a merchant and commission agent, lived at No. 7 between 1832 and 1839. In 1833, his business premises moved from 10 Hunter Square to 23 Waterloo Place, and then to 13 North Bridge in 1835.[1] [1] PO Directories 1832-33 to 1838-39.