Oldfield & Farn (or Tarn), 167 Aldersgate St, London, cm (1779–94). Thomas Oldfield was a member of the Ironmongers’ Co. and as early as 1779 was established in Aldersgate St as a cm and in that year took out a licence to employ two nonfreemen for three months. The business is shown as Oldfield & Farn, 1782–84 but then in most years until 1791 as Oldfield & Tarn. After this date in most years listed under Thomas Oldfield's name only but in 1794 in one directory as Oldfield & Co. [D; GL, City Licence bk, vol. 9]